As a note "Oppressive and demented" did not refer to anybody in particular (not all religious people, or even any of them). It referred specifically to a god, who did do some fairly oppressive acts in his time. Demented overstepped the line though.
I'm not so sure what you mean by "main ideas". I would say that there are other types of people again - as you say, some people need safety wheels. It's true. But it would seem that other people are harmed by such things - some people seem to commit bad acts because of their religion, others seem to take authority figures in their religion a bit too seriously. This is the main problem I see - that there are figures who are unaccountable, and who aren't always well informed. For instance, while I'm sure the Pope means well, and just wants to help his followers, his comments on, say, contraception, probably aren't helping, and could be causing damage to people who go into this third category.
Perhaps a form of religion where supreme authority figures are minimised and questioning (especially of authority figures) is encouraged would be fine. In some places, this seems to be so, but in others... not so much. This is the main problem with some forms of religion, in my eyes.