4. I have to agree with Jza. Maybe not equal disdain (Budhism can be pretty cool) but Christianity, Islam, Judaism and Hinduism have a huge amount to answer for.
Answer for? What do you mean?
greed, oppression, persecution, war, ethnic cleansing, discrimination - i can give you examples for every religion if needs be.
this is ignoring the fact that every one is ideologically similar, its just a case of 'brand preference'.
It's the people that corrupts it, not necessarily the religion itself. If you are to use these as examples, this should apply to everyone and not religion, but the person that claims to follow it.
It's like if Vegans were to become greedy or the other things you put. Vegan isn't what is wrong, but the people that claim it and mess up the name. Some vegans or animal rights people would say this to the ALF and other organizations of the kind (I aint denouncing the ALF, just giving an example). So it's not necessarily the organization or religion, just the people that make it up.
Veganism and Animal Rights is looked down upon for several reasons, one of them being the one I just mentioned to you. Also how some vegans are stuck up, judgemental, etc.