we did have a thread like this before so you could read that if you want
https://forum.weightgaming.com/t/thoughts-on-health/
as for my thoughts. I haven’t though about it to much really. I would never push it on someone, but if they wanted to gain partially for my sake I wouldn’t feel bad about it (unless it becomes destructive of course). if they wanted to only for my sake I would ask them not to (I think at least)