As far as the local pros taking things too seriously; you have to remember that most of us invest a lot of time and energy into our game. Many of us treat it like a second job. It's not an excuse to be an a-hole to anyone, but try to keep that in mind. Not a lot of people have that uber-competitive spirit, so I can see that turning some people off. These types exist in all sports, though.
"Here's some advice: tone down the false bravado and tone up the skill." - Wanderer (20+ yrs experience playing Rec)
"I probably have a better job then you and get paid more" - Osmo