i am always talking about it, but to say it again :D photography community (when there were not even communities) was the reason why i didn't leave back in the day. And those were the end of the happy days going into the bear market.
Rewards are ok, but the more important is to find other people who are interested in the same things you are. Not sure how many good/quality communities are out there at the moment.
We definitely need more of the good ones :))