I've been a member of GA for 6½ years and a frequent participant in chat, though less so recently. I've seen a lot of good-natured kidding, but rarely anything that should make a participant uncomfortable. I can't say that never happens, but it is surely a rare exception to the usual decorum. No, decorum is the wrong word. Any time 10 or more participants are in chat, it will certainly be frantic.
I am probably one of the oldest members ever in chat, and I can't recall anyone ever making fun of my age. Maybe the fact that I am straight makes me less "sensitive". (How's that for stereotyping?)
Ashi's comment made me realize something I had not before. A number of us, myself included, have had several occasions to comment in various forums on what we like about GA. I never mentioned the fact that an association with a group of people who are much younger than I on average makes me feel younger. It does just that. And it's not just when I am in chat...that feeling stays with me when I am away from GA. So, make fun of my age...even my sexual orientation...but do it in a good-natured way and I will eat it up.
The_Round_One, give chat another chance. Hang back if it gets a little intense, but try to enjoy yourself and others will enjoy your company. See you there.