Sometimes people hold beliefs that I think are problematic. I will talk to these people no matter how much I disagree.
Sometimes people have no epistemic humility. I hate talking to them, even if I agree with their beliefs.
THAT BEING SAID it is important to clarify that having a horrifically 'wrong' belief does not make you a dick.
e.g. "we should euthanize all sick people" doesn't make you a dick.
"we should murder all weak pussies, obviously" does make you a dick
It's almost impossible to find decent dialogue between opposing views. Most of the time someone is going to get their feelings hurt and start personal attacks. It sucks because a good dialogue is very healthy