When believing false things is comforting

[TaraJo]

Right or wrong, believe whatever you want; just don't be an asshole about those beliefs. I think my only objection here is that so many religious assholes go out of their way to push their religious beliefs onto others and they'll do it at gunpoint, if necessary.

To make an analogy, if you have a friend who loves WWE, do you spend all your time telling him how fake and made up all the "wrestling" is or do you just let him enjoy his show?

Or to think about another perspective, some people have done very good things from inspiration they got from their religion. Ghandi and Martin Luther King Jr are examples here. Suppose, for a moment, that removing their faith would have interfered with the good they did for the world; should they have been convinced of a true belief, even if it prevented them from doing good? Or, likewise, if knowing the truth would have caused someone to do something bad, should they be allowed to continue to believe something that isn't true?