It's just part of life. People tend to group up with those who have similar interests. That's why we join these equine clubs to start with. That's why we're on this forum. Inside a big group, we migrate to smaller, more precise groups. Some people are snotty about it, but it's also a natural tendency.
I try not to be clique-ish, but I do recognize that I talk mostly to those people I know and have more in common with. I'm slow in getting to know new people (when they aren't having a beer with me).
There are 2 things that really irk me:
1) There are people who wouldn't take time to flip a booger on me 3 years ago, but when our Stallion had the year he did in '05, suddenly I had a lot of snotty friends. Most of them pretty much quit talking to me once they figured out that they weren't going to get what they wanted out of me. Some never even would talk to us but would use our trainer as a go-between. (If you can't talk to us in person...then we really don't have much to say.)
I have friends with money and without. I WANT money, but it fails to impress me. I'm just as impressed with some nobody kid out there working her butt off to show her grade pony as I am with the richest big-name breeders who never handle their own horses. In fact, that kid is usually more fun to talk to.
2) I can't stand people who forget where they came from. Sure, you may have (or be) the hottest stuff out right now, but you should NEVER forget who sold it to you, gave you the chance to show it, or helped you make it to the top. We still call the people who sold us Redi several times a year. Do they have another Redi to sell? No. But we will never forget that they were so kind to us in the past.