And one day he just had to try it and feel what all these stories were about. He started crying immediately. We went to the hospital and came back rather quick. It wasn't so bad, just had to have a bandage for a couple of days.
Some weeks later he does it again. On purpuse.
!!??
I tell my brother and he answers: "I kind of understand him. Sometimes I want to do it too."
Similar story: I have a good friend who, as a kid, regularly had to have poison control called for him. It didn't matter what his parents did to hide the stuff he shouldn't drink, he would still try to get to it and drink it. Despite having to have his stomach pumped multiple times.
What children perhaps need is a different amount of parenting in different stages. Someone wrote that first you are the authority figure and the lighthouse for love and safety, then you become more of a mentor as they grow up.
Again, the best you can hope for is that they learn good enough values and let them live their lives, it’s THEIR LIVES, not yours and maybe they will come to you for help. And when that happens, go to town!