To me using $100 to gamble is way too big to be considered as what one can risk . Though most people sees as small amount of money but there's certain amount of $100 you may loss and think is a small amount of money, but when it will get to point you will know that the amount of money you considered small turnup to be something huge after calculating the losses
Of course, of course it is like that, when I bet in a casino I don't even risk 10usd, even if I lose 5usd it hurts a lot, but since there are so many people in the world with different degrees of economic situations, for someone 100usd is nothing, even if I raise the bet up to x10, for me it is a lot of money that if I lose it I think I would not return to the casino for about 1 year, but According to each person's situation the situation varies, that is why each person has to bet the Amount of money they are willing to lose.
We all have different level or class and e everyone knows there class and how much they could risk when it comes to gambling. I think a person who is very curious to win bets could even risk more compared to someone that just want to gamble for fun. It is good we gamble for fun but it is wise for us to know what we are doing so that we can be making consistent profits from gambling. Those that are ready to risk more might tend to earn more from gambling, although this does not happen often. Gambling is supposed to be for thise that understand the system and know how much they could risk everytime they want to try their luck in gambling.