There is no such thing as a group of people that completely get along. That includes large families
However I have to say that ALL of the people I have met through this site have been amazing people. And when you meet people in real life, they tend to be on better behavior than their online personas might otherwise suggest. You can't change other people so you just try to have a thicker skin. I tend to be pretty open about talking about other peoples' trees - because I tend to be very critical about my own trees. However it might rub people the wrong way - even if it isn't intended to. Always remember - they are YOUR trees. Do whatever you want! And if you like them, but other people don't, consider the source, and decide if they see something that you may not.
I tell this story all the time, but one of the things I enjoyed about our study group members in SoCal was that we would often talk about very different approaches to the same tree. I might not always do what other people suggest, but I would usually start looking at my tree with a slightly different perspective.