I found this article by Richard Stallman on Reddit. Good stuff, although at times a bit over the top:
Teaching children to use Windows is like teaching them to smoke tobacco—in a world where only one company sells tobacco. Like any addictive drug, it inculcates a harmful dependency. (Bill Gates made this comparison in a 1998 issue of Fortune Magazine.) No wonder Microsoft offers the first dose to children at a low price. Microsoft aims to teach poor children this dependency so they can smoke Windows for their whole lives. I don’t think governments or schools should support that aim.
Funny, I was once accused of being too ‘Stallmanesque’.