The answer to that is Marijuana
Continue to have check ups just because you are treated doesn’t mean it’s gone fully and can’t come back.
Tolerance can in fact cause an overdose, because the greater tolerance you can get the more of a certain substance your body will need eventually leading your body to take more than it can handle leading to overdose and death.
Answer: this question is opinionated so I'm just winging it for you-
I would not mind because I don't really want to have kids. If they were upset about it and it was affecting their mental health, I would then in that case feel empathy towards their pain and support them the best I could.