Being uneducated about photography doesn't make people jerks, it just means that they are ignorant of a field that has technical as well as creative factors that most people are not aware of. Photographers can be jerks as well -- witness the derision that sometimes is heaped on people with P&S cameras. Hey, I shot with a P&S camera a couple of days ago!
And, honestly, those of us with SLR gear got that gear so that we could take better pics in a wider variety of conditions, right?
So, when someone compliments my gear, I smile and don't give it serious thought, unless it's to give an intelligent non-snobbish answer (or in reflection regarding certain threads on the forum).
A lady commented a few days ago "That's some serious equipment!" Now I could have said (or imagined saying) "No, I'm a serious photographer, you silly thing!"
But instead I smiled and honestly said "Yeah, it is serious gear!"
A guy commented a couple days ago the old "That lens can probably catch the hairs on a fly's butt!". Of course at MFD it actually can do pretty good close-ups, but I just said "It doesn't get real close, but it does help me to get some good pictures."
Actually, the only remarks that I get that show a bit of disrespect toward me and my gear are family and very close friends that get impatient with my passion for photography, but they still love me
!