the assumption that gambling is a bad thing to do in my opinion this view occurs because gambling may be prohibited in their country or by their religion, besides that they may have seen many cases that have occurred about the destruction of someone's life because they are addicted to gambling, but if you look further, the destruction of someone who gambles is because of their own actions which are indeed unreasonable.
Uhm, it is not actually an assumption because we've already seen a lot of proofs about people who got their lives ruined because of excessive gambling behaviour.
However, to the people who legitimately know the meaning of responsible gambling, things are a bit different. Gambling is not really bad, as long as it's remain under your control.
About the religious side, I hold nothing against them, but most of these people are just hypocrites and self righteous.
Right, it means we are talking based on a fact that indirectly becomes the only reason why we always say and suggest to anyone to treat gambling properly and according to our abilities, especially in terms of putting some money.
On the other hand, I agree with what you said that actually gambling is not bad, but what is bad is the behavior of gamblers who are wrong in treating gambling activities so that it has a bad impact on their lives.
Therefore, because of this, I often tell anyone, especially my friends who want to get involved in gambling, to first get to know gambling by finding out about what and how gambling really is, I understand that success in achieving victory is very enjoyable but look at other parts such as risk, because logically there will never be significant results with just a little effort, and if that does exist, then surely many people will stop working and prefer to gamble.