Gambling is a fun. It would be better if people take it accordingly. If anybody thinks that he can earn money through gambling and manage his family then he is completely wrong. Because gambling is just a luck. You can not rely on it. You can win jackpot once or twice but most of the time you will end up losing.
Even the jackpot is not certain - there are gamblers here that have been gambling for years and still haven’t hit a jackpot since they started gambling, they have managed to make some money off some good multiplier but never a jackpot.
This alone should be a good reading for gamblers to realize that gambling is not supposed to be taken as a full time job or a means to earn money - the moment you get engulfed by the thought of making gambling your money making scheme that’s the moment you start walking to your destruction because there’s a high probability of getting addicted to it.
Not just getting addicted, but there will be a higher probability of making more losses than profits. Just imagine a gambler or someone who bets at least seven times in a week, knowing fully well that what he/she is into does not give a 100% guarantee of success, there is no way the person might even get more than 2 successive wins within that period.
And just as you've said, jackpot isn't certain. Infact, the probability of hitting a jackpot is far lesser than the probability of having a normal win. Jackpot is not a regular win that every gambler experience at once. It's more of like a rare experience that only a single person gets, which might not even happen to 50-70% of all gamblers through out their entire years of gambling.