I play for money all the time. Not that I really want to, but occasionally, I'll end up with a free lunch, you know, nothing really big.
I'll put $5 bucks in the pot if the group wants it. Or I'll just have a side-bet with whomever, if that's something they enjoy doing...
But the best is the guy who always wants to play for $5, and who rarely gets anyone to bite. So many friends of ours are just literally thinking, "I can't beat him. Why should I pay for the pleasure of his company?" Right? We all understand that hesitance.
What they don't know is that if you take his bet, you'll come to the end of the round, and start digging for the money, and he'll gently stop you, and say something like, "I don't really want your money. I just wanted your best game, your
focus."
In the end, he just wanted people to care about what they were doing, instead of making it ONLY about the social aspects of it. I try to remember that, whether there's a wager or not. Because really: if you're playing with friends, there's at least
one of them you want to take down. And that extra focus can absolutely help.