I think it depends on each person's interests. I currently prefer slot gambling, where winning is purely based on luck, as there's no need for strategy or anything else that forces the brain to think. I just wait for a good spin and win. However, even so, I don't get bored of playing it over and over again, unless the game lasts long enough, then I get bored. But the option I do other than stop playing is sometimes I turn to games that are not the type of gambling.
Much more accurately, slot gambling requires no skill whatsoever; we can simply determine whether each spin is good or bad. This is certainly quite easy for anyone to do. It's true, however, that winning ultimately depends on luck.