I have been gambling since school and see no problem with teenagers gambling if they do so sensibly. Of course, there will be some teenagers who abuse gambling, but they are more likely to do so as an expression of their desire for independence and freedom from restrictions and rules, which is very common at an age of maximalism. Over time, most of these rebels will accept the reality that the gambling system cannot be beaten and will calm down.
The thing is that not everyone has the same understanding , the same way of thinking and the same maturity that you have, there are people who when they play as adolescents only want to do that throughout their lives and oh, if they win then they see easy money and they lean towards activities like those, they create laziness and believe that life has ways of earning easy money and it makes the brain lazy and really that is the worst thing that can happen , most people want to get carried away by that and they do not Control it like you.