Seen first hand a wide variety of gear I could have only read about otherwise.
Visited places I might never otherwise have seen.
Gained weight stuffing myself on the good eats of great outdoor cooks.
I've seen, and learned about Swedish Candles; Fat Wood; recipes for great food; cozy construction; whoopee slings – how to make, how to use; wood burning stove demos; bear scat; how to make char cloth; how to pack a Molly Mac Pack; knife honing; Single line hammock suspension, Dutch oven techniques; new alcohol stoves and the list can go on.
Probably the most valuable thing I've gotten from group hangs are lasting friendships and memorable campfire time with people I would have never otherwise met.
What about you?