I have already explained everything in one of my earlier posts. Also you said it yourself that if my beliefs clash with other people's, either they or I must adjust, so there is still no room for voluntary change if that was your point...
Of course that's voluntary; you don't have to conform if you don't want to, you just gotta figure out how to survive without other people. Nobody is forcing you to do that. What do you believe is a voluntary interaction? And don't tell me there are none; you're participating in one right now.