it is associated with luck and greed. I mean when someone feels a strategy or prediction in every betting session he always wins and feels himself lucky he will definitely continue to bet because he feels that the winnings he gets are not big enough and continue to chase bigger wins in the hope that the winnings can be doubled but without realizing it is breaking the rules that have been determined when planning the winning limit rules and after betting all the winning money the bet loses and loses the entire budget and winning money which ends up chasing the loss. it is indeed very difficult to be consistent with the rules that we have planned at the beginning because greed has always been the main cause in the human mind so that when betting with greater hope it will definitely lose because we ignore how gambling works the longer the bet the more the house win.
Luck plays an important part in Gambling as you would need some luck in whatever strategy you apply without luck you won't make a single penny in gambling. As of now, I am not going to say that you can earn daily $100 through gambling. Consider the fact the amount of money that would be needed to win $100 daily would suffice your win. With luck you may not need to invest money or time as with one strike you may win an amount that would end your daily $100 goal for a few months. I would still say that there are other methods through which you would guarantee to earn some money every day. Those methods should be looked into and not gambling for earning.
You are very correct bud, gambling does have the potential to make a lucky gambler a profit that is much more than making $100 everyday, that is, if a gambler is extremely lucky, he could win an amount that covers $100 everyday for the next few months, or even up to more than a year , but another thing like you have mentioned is that, the gambler would also have to consider the amount of money he or she is wiling to stake on every game in order to make that much, and be absolutely sure that its an amount he or she is willing to part with, or completely lose at any time lucks happens to leave him or her as there is absolutely no guarantee of any kind anywhere, or any casino, as long as gambling is concerned.
For anybody looking to stand a better chance of making such amount every day, that person could consider trading instead, with good trading skills and investing the right amount on every opportunity that shows up, and exiting at the right time,(which is part of good trading skill anyway), a trader stand a better chance of making and even more than $100 every day, depending on the market condition each and every day.