I do a good many things just for the love of doing them. Do I like it when I make money? yes. Did I use to play growing up for both fun and money? yes.
I have played a lot of different games in my life, not all were played for money and I had just as much fun.
Seems like all good games I liked to play growing up, ended up being for money, ie... shooting pool, playing backgammon, various card games like black jack and poker, and even dominos I have played for money. But in the end, I would play any just for the chance to play.