If you're working in jobs you'll get paid each month or week it's guaranteed your boss's going to pay. Betting games can't be considered a source of income because payments aren't guaranteed. I'm not a gambler so can't understand why ppl work difficult hours for money but do gambling. There's a risk of addiction so ppl shouldn't gamble.
You're correct mate, there are persons who are smart enough to understand that gamble shouldn't be considered as a source of income but more like a game where you play to entertain yourself especially when you play with friends and family. Just like the poker game, football or other kinds of betting games. The only reason these men are able to execute such level of discipline is because they know the risk and danger that addiction can cause to the life of any man that gives himself to it. It might be unintentionally or by chasing loses.