Also, let's be clear here. In terms of possible worlds, this is most certainly true:
Without religion there would perhaps be no colleges or universities at all.
Of course, in terms of possible worlds, this is also certainly true:
Without religion there would perhaps be colleges and universities.
Dan covers his butt here:
Would great art, literature, music and architecture have been created without religious inspiration? Would Florence Nightingale, Martin Luther King, William Wilberforce and other reformers have been impelled to do what they did without religious beliefs?
Maybe.
So, here's the tl;dr version of the article:
Without religion a bunch of specific art-tokens would not exist. In a possible world without religion there aren't colleges or universities. There are possible worlds without religion with great art, literature, music and architecture. There are possible worlds where Florence Nightingale, Martin Luther King, William Wilberforce and other reformers would have been impelled to do what they did without religious beliefs. The jury is still out on whether exceptional literary, artistic and musical masterpieces have been produced in the last 70 years. It plainly requires faith, even from an atheist's perspective, to believe that a world without religion would be an unmixed blessing.