One of the most common side effects of SSRIs is not getting horny anymore, to the point of sexual dysfunction. Yet for many people this is a trade-off they want to make for not being depressed. For you it could be win-win.
Talk to your doctor, get a psychiatrist. It's worth it.
Vasectomy doesn't change anything wrt horniness etc. Removing testicles isn't possible, you need testosterone to live healthily. Unless you take estrogen to compensate, but that's another matter. It would help with horniness though. Some SSRIs could work too.
Its harm potential is somewhere in between. To put it in perspective, alcohol is worse than heroin. And like alcohol addicts, your friends should be able to get a clean and safe source to reduce damage, and the help they need without any fear of persecution.
You can't criminalize problems away. It evidently didn't help your friends.
I had a year or so that I had realistic mundane dreams. Just doing my chores, which I then had to do again when I woke up. Worse than any nightmare.