Exactly. Yes, cave diving is extremely dangerous. Deep diving also is dangerous. But there are dives, amazingly beautiful dives, that, while not devoid of risk, are very safe. Simple, shallow dives in the Caribbean, for example, where the benefit of the tank over snorkeling is just that you can stay down longer.

Diving is wonderful. Get certified (but you don't have to be for some dives).

I also sail. Also wonderful. Can be dangerous if you push the edge, but more likely embarrassing if you stay within your limits.

I don’t know the stats but from what I read a lot of accidents are not tourists but more serious divers who go below 20-30 meters. I haven’t heard about people getting injured while on regular tourist dives.

Same with motorcycle riding or paragliding: it gets dangerous once you are beyond the beginner stage.

I really don’t know what could go wrong on the typical tourist dive if the dive master keeps an eye on people and you don’t panic.