When it comes to the individual, it is usually a good thing, providing that he or she belongs to the religion of his or her choice. If they're forced to do something against their own personal beliefs, then it is bad.
When it comes to groups, it is nearly always bad except for how it relates to the individual (being part of a group of like-minded people can be comforting and enjoyable).
that depends on the religion itself. i m Muslim, so i will talk about what i know, there is a Hadith (words told by the prophet PBUH) in Islam that says that good and bad are both obvious (of course, Islam itself also provides guidance to differentiate between them).
please feel free to criticize me, i m very open-minded
1) Religious texts are propaganda for their respective religions, but only in the way that fairytales were intended to be for morals.
2) Religion (at least, as seen by atheist me) is something that humans need in some part of their society, not their personal lives, to keep them from hurting others too badly. The expectation of some part of society to be a force for good keeps the "less good" impulses of entire communities in check. However, when a religion gets to the point of hating or hurting people outside their beliefs, it's time to take a step back. I'm not even talking about religious extremists or anything either. If your 10 year old daughter is telling people that they're going to go to hell for not accepting Jesus as their savior, or your 14 year old son is bullying some kid because he belongs to a different faith to the point that the kid stops coming to school regularly, it's too much.