Religious believes can block scientific progress. for example alot of people dont "believe" in evolution for religious reasons while its scientific fact. That is one of the reasons why i think religion is harmfull.
other reasons are that relgious believes can generate alot of hate towards ohter people. just look at the middle east. but also in the US: westboro baptist church.
religion is often used as excuse to hide behind when they are criticized. "No hate please". and that way they try to silence and censor all the critique. stupid and hatefull ideas should always be criticized (religious or not).
