We've already told you, I think the general idea is that no one's any idea why posts degenerate into nastiness and childishness, they just do, call it a quirk for want of a better word. That logically should close this question for you, it's irrelevant whether you're satisfied with the outcome really.
The other issue here is what you perceive as hostility towards yourself, however as you've already confirmed you're not here to make friends, that shouldn't make a difference to you, should it?
You ask a serious question, it will be answered sensibly ( by most folk anyway). However if your opening sentences start with calling us childish and telling us to grow up you seriously can't be naive enough to assume that this won't be challenged can you?