Can I just say that people who have been here far longer and are on regularly will naturally be closer to each other than to those who are new or relatively or only occasionally visit the forums. That's just human nature. You can't expect to have a great rapport here until you've been here awhile. It just takes time. I was here for several days before people even said "Hi" to me. There's hope. Stick around a little longer.
As for why some of us get shirty with some here it's because we're battle-worn from the crap we've put up with (some of us for a couple years or more). Unfortunately we've been kicked one too many times (this isn't in relation to you, but to some others here). I'm not saying this to excuse such things, but to give some semblance of understanding.
Finally, there are many types of people here. Some have serious mental issues, some are truthful but mean, some are loving and truthful, some are earnest but don't have a clue, some are Christians, some pretend to be Christians, some are non-Christians, some promote other religions, some people spam forums, some condemn anyone and anything, some people come here to rant, some come here to teach and learn, some simply come here to teach, some come for fun, others because they're bored, lonely, have issues. We have all types here.