Hi, there! (:
Well for starters - you shouldn't take your friend's medication because it can internally harm you. Chances are if it's prescribed by a doctor for someone other than you it's not made for your body which can lead to a very dangerous reaction on your end.
Another reason is that it's not actually legal.
But lastly, it can lead to a road of addiction, or even you going and trying to experiment further, and it could lead to long term damage.
I hope all is well, and you pass! Good luck, rockstar! (: If you have any follow up questions, or even a comment on what i've wrote - let me know! (:
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.