I used to play a lot of chess, and it totally took over my life. So I never play it anymore, because for me it's too addictive. For some people (like some of these hustlers and others who can make a living from it) that's ok, but for me I wanted more from life than just playing chess all the time and thinking about nothing but chess.. but for certain types of people it has a way of sucking you in and can be a way of…
My grandfather said that "Too many great minds have been wasted playing chess.", and so always played checkers with me, always kind and teaching, but never rolling over. It took me years to win, but I still remember the three times I did before he passed away when I was 13. I've hardly ever played again. Played enough chess in HS to learn how, a few openings and just enough games to understand the intensity. I could definitely see what he meant, and it's probably a good thing my passion was already for alpine ski racing, which has similar intensity but is naturally a bit self-limiting (e.g., the lifts close and you have to go in).
I've since read the saying to the effect that "Being able to play chess is a sign of intelligence, being able to plat chess very well is a sign of a wasted life.". Seems to ring true, except for the true greats.