Ew. I try not to be judgemental and I'm all for drug use and harm reduction but some of the replies here are just cringe worthy. If I had to pick a drug that was truly evil, it would be meth. Right next to alcohol. The gay men in my area love getting the younger and inexperienced ones hooked, so that they can then use them while they're in their hypersexual stupor for sex, possibly fucking these people up for life. I see guys all the time, they start off innocent and decent human beings, local meth dealer sees them, gets them hooked, next thing you know they're injecting the shit and sleeping with everyone within a 150 mile radius. It's disturbing to see this kind of behavior cheered on, but then again I am a rare breed and try to have values. And this is coming from some one who 100% thinks heroin needs to be legalized like ASAP. I try to pass on the neurotoxins these days, but I'd be lying if I said I didn't indulge once in awhile. Always feel like shit when it's over though.

After you've done this shit for years and had a million orgasms on it, you'll find it much harder to get into a state of intense arousal when sober and honestly, I was/am a beast in bed when I'm sober and I'd like to keep it that way. Porn is boring and I prefer making actual meaningful connections with other humans, that isn't influenced by an unnatrual intense rush of dopamine to my head. But that's just me and I've accepted that I'm not the norm. It's a shame though, cause I think the world could use more love and meaningful relationships rather than more degeneracy. Never met a soul who could stay faithful to their significant other when using this shit, nor did they seem to even care how their actions affected other people. In fact, their entire personality changes into some one who they weren't before and isn't exactly an improvement either. Hard to find anything humorous or exciting about a drug that literally robs a person of their soul (not to mention their vocabulary and sanity), especially when you watch it happen to some one you care passionately about. That person you loved long ago is now gone once they decide to make it a habit. And if they do enough damage to the brain, that person may never come back.
I won't even get into those 'tweakers' who just ramble in tongues and never shut up or stop moving around, most likely due to prolonged sleep deprivation and too much dopamine.
A few summers ago, I went on a binge and jerked off while laying in the same position for I think probably 48hrs or something. All I know is I got up to pee and my piss had turned dark brown, like root beer brown. I knew immediately that this was not normal (nor was it just regular dehydration dark colored) and discovered that I was probably in the beginning stages of
Rhabdomyolysis. So in the spirit of harm reduction, if you're going to be a degenerate, lol, don't be like me and make sure you get up and move and give your muscles time to relax. Thankfully I don't think I suffered any permanent damage, but I was ignorant to the fact that something like this could happen from the effects of the meth + strenuous straining and repetitive movements. Had I not acted quickly, kidney failure could have been next. Definitely wasn't an exciting experience, especially after going on day 5 with no sleep.