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It depends mostly on two things: 1. Your salary, or an amount of money in your possession; 2. The total amount spent on gambling (let's consider the situation when your profit is negative). If after three years of gambling your total loss is less than your current monthly salary, you shouldn't be upset about your loss as long as you were having fun playing. But if you
are upset still, then you should consider gambling less or not gambling at all. It's no rocket science to figure out whether fun worth the money or not. If gambling helps you to relax and more easily manage the stress of life, then it's probably worth it. Yet, like with any remedy, you shouldn't abuse it.
I get where you're coming from. "You gotta pay." basically. Having your reputation ruined for being a gambler and losing money from gambling is just not worth the "fun" in my opinion. Other forms of entertainment can be a source of a better physical health (prolongs life), can be a bonding time for you and your family (promotes a healthy relationship for the family which is very important), and it wouldn't cost as much.
Where did the 3 years came from by the way?
It is not good to make an user get into gambling until he or she has got own willing to experiment the truth behind gambling. One should not force an user to get into gambling. Out of interest if someone asks about the aspects and the way to be a part of gambling it is good to show the right way.
But this thread is not about getting people into gambling. It's not about forcing them at all. OP is actually worried that the people that are asking him about gambling might get addicted to it so he's hesitant.
After I read all of the comment I got a better sight, I found out that most of the comment said that its okay to teach them but you need to remind them the danger and the consequences, but still when they got addicted I think most of the people will still blame the one that teach
There really is no point in blaming the person who taught the person how to gamble. Eventually, he will find someone else to teach him or he can just self-teach. Google is just out there. Honestly I don't even understand the need to ask a specific person to teach you how to gamble when the information is out there on the Internet. Why disturb someone for something you can do by yourself? Nevertheless, it's the person who got addicted to gambling who's at fault since no one forced them to gamble anyway. Why blame the person who taught him when he only helped him initially? He was the one to asked, the person who taught him was just being helpful.