I recently had to end a friendship due to this kind of thing. My girlfriend is fully supportive of my hobby and my friend who introduced us only began to realize just how many reptiles I had as I allowed her to see them. She, being a PETA type and never having owned an animal other than a cat or dog, said she was worried that I was hoarding and that I was mentally unsound. She also did not know me well enough to reach that conclusion. My girlfriend and I were royally pissed. Though she was not a reptile person at all, I converted her and she has never had a problem with them.
So, after that ordeal I ended my friendship with the girl, and now spend most my time being antisocial with my girlfriend. We've decided to just keep my hobby to ourselves. I know I'm not a hoarder, and everyone on here knows they're not crazy for their passion. I like just the girl and the reptiles anyway. They're much better company than anyone else.