The only chance someone can make 100 dollars daily is if they play skill games like texas holdem poker or sport betting where 50% of skill is still involved.
You are right, I would say that those who can win really well are even less, maybe it is 1-3%, and the minority is winnings in the casino, and a little more is gambling. Players return to recoup, or for adrenaline if it's just a game in order to distract from work or from the daily routine. I also believe that winning $100 a day is impossible, and if you believe in it, then just try playing for a few months and see for yourself the result.
See yourself and assess if you really got that chance to win in a daily process, I believe also that it can't be done everyday,
maybe you can 3-4 straight days but after that you'll lose it back.
Better to treat gambling as good place to kill some time, for entertainment and not for your daily source of income, in that view the
chance of enjoying would change the view of losing.
Gambling always accompany by risk, it's tough or maybe impossible to keep winning your bet.