That might varies, based on your personal experience but categorically, people that gamble are not degenerated in any form, if such a gambler would put fort the power of self discipline. Have been gambling, and had never be degenerated since my start till date, becasue i gamble with sense, and responsibly, for fun, and for entertainment.
Self-discipline is still the best attitude towards gambling. Because if we only play without setting limits for ourselves, surely we will end up being addicted and with addiction follows lot of crimes and big losses in the end. We should only gamble for fun and not to gamble senseless and seriously.
Though it is easier said than done, but self-discipline is really your real enemy here.
If all gamblers are gambling just for fun, I doubt those casinos will earn huge amount of money.
Those who become addicted have other purpose other than to entertain themselves, money is of course the obvious major reason.
Those who become addicted are the ones heading to a degenerate life. If they will not address the root of their addiction, I doubt they will ever get out of that terrible situation.