Could be in any context. I do it a little on UFC fights but that’s a relatively low amount and I can afford I to lose any time I do. It seems like it’s becoming a really wide spread problem though, at least in the US. At the same time I don’t see why it should be illegal. Granted I also don’t think any drug should be illegal.
I don’t enjoy it. I think it’s sad when people get addicted to it.
I don’t even like big random factors in games. One of the things I like about the dark souls franchise is there’s very little randomness. You never win or lose because “lol critical hit”, like you might in something closer to D&D