i think many people that play gambling doesn't realize about their limitation, all they know is how to make money with gambling and they will continue to play until they don't have money to play. and if this is the situation, they will borrowed from other people and continue to gambling.
i am glad that you are not that person anymore, and you should be proud of it.
Then you are very lucky if you are the one that they borrow money and you give them a little interest if they give back the money hahaha earning from a borrow . But yeah you are right lot of the gamblers they cant manage their self when to stop that is not a good sign although they can get back their money but sometimes not then they should control their self