It has NOT happened yet, the reason is the people advocated this do not understand "Religion". Religion is more than a belief is God (In fact Religion will survive even if everyone stops believing in God). Religion is a "World View" i.e. how you think the world is and should be. Computers can not change such world view (i.e. do you believe it is better to help someone suffering, or to leave them to die on the grounds that is the function of "Survival of the Fittest"?), computers may provide more information, and complete gaps in our knowledge of the Nature and the Universe, but NOT how we view our place among our fellow humans (and our relationship to Nature and the Universe).
Most of the people advocating that Religion will disappear have a world view and want people to adopt that world view. In affect such people do not want to end religion but have all of the people adopt their "Religion" as the one and true religion. That religion holds scientist like the High Priests of old, that "Science" should be the highest form of Study and that any thing that does NOT meet these requirements is "False" (Just like the Catholic Church during the Middle ages). Now these Scientist have not defined what this new religion will be, they can not agree on the exact dogma, but believe that with some more research these disputes will be resolved and you will have a "Universal" rule of how the world works, and once these rules are found, everyone will adopt them.
Rosa Luxembourg wrote a paper close to this subject in 1903 (and expanded on it in 1905). In both papers she went into details about the nature of the Church and Society and how the Christian Church has changed since the time of Christ (This later idea is in her 1905 paper not her 1903 paper). In Both papers she opposed the Church as an agency of the State being used to keep the working class down. On the other hand she also opposed the "Anti-Clericalism" that was common in France in that time period. Luxemburg attack Anti-Clericalism as a ploy to separate the Working Class from adopting Socialism by providing a false set of opposition between the "Bourgeoisies" and the Catholic Church. This false opposition had been caused by the raise of "Bourgeoisies Atheism" (A term used by another Writer of the time period) which differentiated from "Proletariat Atheism" in that the later permitted and did not interfere with (or encouraged) private belief, while "Bourgeoisies Atheism" wanted no belief in anything (let alone God), if such beliefs interfered with the Bourgeoisies control over the Working class.
Luxemburg and her fellow Social-Democrats of the time period opposed discrimination for or against any religion, but also opposed attempts to suppress such beliefs as NOT being in the best interest of the Working class. In simple terms there is NO GOOD REASON TO ADVOCATE ENDING OR SUPPRESSING ANY RELIGION BELIEFS, if that is to occur it will occur in its own good time. On the other hand people who express opposition to religion often have other agendas, including denying the working class the ability to organized themselves by denying them access to forums NOT under the control of the Bourgeoisies.
In many way Luxemburg was right, most people advocating the ending of "religion" often have an agenda that puts them in control. In many ways, these Group of Scientists are frustrated that a huge segment of the population do not treat them as our rightful leaders, instead looking to Religious, Cult, family, Lawyers, Politicians and even their neighbors for guidance on how to view the world.
You can see this in that these scientist are frustrated that once the Church lost it function as the main form of communication (Which it was till the mid-1800s when pulp paper and high speed presses made what we today would call a "newspapers" possible). Despite being replaced as the primary News distributor by Newspaper in the mid01800s, the church survived as part of the social fabric. This frustration can be seen when the "Scientists" comment about the Internet and Television, finally doing what the Newspaper and the radio did not do, replace completely the pulpit as a information source. Despite the replacement of the pulpit by other (and better) news distribution systems many people's world view is still govern by what they hear from a pulpit, as opposed to what these Scientist say their world view should be.
What these scientists failed to accept is while we may get a much better understanding of how Nature and the Universe works, most people will NOT be able to understand those concept themselves, not because they can not, but they do NOT HAVE THE TIME. Religion provides a world view that helps people live their lives day to day. Religion provides enough information for most people to operate very efficiently. As Doyle had Sherlock Holmes observed in one of his Books, Holmes did not know or care if the earth went around the sun or the sun around the earth, either way the sunlight reached the earth and Holmes could use that information to solve the problems he was facing. If Holmes needed more he would then and only then get more information, but Holmes refused to keep in his brain any information that was of no value to him. Thus Holmes did not know (at least in the Doyle Books of Sherlock Holmes) that the Earth traveled around the Sun.
The same for most people who live today or 20 years (or 200years from now) from now, how a Cell Phone work is NOT important to them, as long as it works. How the universe relates to itself is unimportant, unless the information is of some use to the person who receives the information. That everything can be explained using a complex calculation does nothing to help a person stuck in rush hour traffic.
My point is what these Scientists are saying will occur, is based on a false premise, that these Scientist KNOW why people believe in one religion or another (or don't Believe). That Belief is based on gaps in our knowledge of how the world works and once those gaps are filled, religion will no longer be sustainable. The problem with this presumption is that Religion is NOT just a set of beliefs design to explain the unknown, but how people are to live with each other, how does one view one's place in society. Do you believe it is better for people to die, so that the more fit can survive, or do you believe you are your brother's keeper? Both are religions beliefs, the first is Social Darwinism, the later traditional Human beliefs as our function as a member of society. Increase knowledge of how Nature and the Universe works will NOT determine which set of world view we want our fellow humans to have and as such Religion will Survive for a very long time to come.
For Rosa Luxemburg 1903 Article " An anti-clerical policy of Socialism" See the following:.
http://www.marxists.org/archive/luxemburg/1903/01/01.htmSome of her other writings:
http://www.marxists.org/archive/luxemburg/index.htmMore on Luxemburg:
http://en.wikipedia.org/wiki/Rosa_Luxemburg#Further_reading