Oh alright. No that makes a lot of sense. There's always the possibility of people leaving inapproriate or bashing/flaming type postsProfile posting existed in some form when we had vBulletin, so disabling it when we upgraded to Xenforo only seemed natural. In various subforums there are hangout threads and we have sections in the Member Zone and stuff like the Fun Forum that allows people to "let loose" and be a bit more casual with conversation. In the past, we had concerns over it being difficult to moderate every single member's profile in case things got abusive, etc.
I'm personally not 100% against it ever being an option, but there are other concerns regarding it when it comes to technical side as well.