I used to pierce my girlfriend, nipples, ear and tongue. It was incredibly intimate. All the piercings I have, besides tongue piercing, were done by her, a few in lobe/tragus, lip, eyebrow (both removed).
Piercing / being pierced by a partner is one of my secret fantasies.

How did you learn to pierce safely?
I think you're right about the willingness to experience pain being part of the turn-on... it signals courage, which is instinctively appealing.
People are weird. I'm sure you know about the tribes of indigenous peoples who stretch their lips to accommodate massive lip-plates... I've often wondered why something so extreme would ever become a cultural norm.
but I'm talking about full blown air restriction
Mmm... another fantasy of mine.
I don't know, sometimes I think sex-drive is in close relation to the will to live, lol. When I've felt the most optimistic I've also felt hornier, whereas depression and stress destroyed my libido for a while.
That makes sense to me. For one thing, you're not ready to be a good parent if you're in a shitty frame of mind.
Salvia for the ultimate transformation fetishist.
The only concern I'd have with using salvia for transformation purposes is that I might not be aware that I ever was a person to begin with. Once a toaster, always a toaster.
Porn these days is pretty lame, I agree. Super fake, mostly dudes dominating a girl who doesn't seem into it (cuz she's being paid, duh). Everyone so often you can come across one where it seems like a couple genuinely having sex and being into it, and that's cool. I dunno, porn is weird and I think negatively impacts guys' views of what sex even is or should be, who watch it too much. Of course, I have a girlfriend who likes to have sex. I can't say I don't watch porn sometimes when she's away, especially when she leaves for 2 months each Fall.
I've never even been remotely interested in porn. Maybe if I spent a lot of time searching, I could find some niche sub-genre of porn that would appeal to me, but why bother, when I can close my eyes and imagine any scenario I want?
Actually, when I do want to use the power of the intertubes as an adjunct to my imagination, I usually just search for still photographs of good lookin' women. Legitimately I prefer it when they're clothed, haha. (Then they become the subjects of my imaginary scenarios, and the clothes do not remain.

)
I actually once made a work friend who I offered DMT when I had it, and in their trip they became a frog who began remembering and then re-experiencing his past life as an adult male human carpenter, but this friend who smoked the DMT was apparently female. However, I later learned that they were actually an in the closet transman and had never had that kind of experience before. That felt pretty cool.
That reminds me, one time I sort of did experience a transformation on DMT -- the strongest trip of my life, in fact, which occurred after I sniffed a bunch of DMT (ow, do not recommend) and then smoked some more at the peak. It concerned an object in my room, not my body, but that hardly mattered of course because during the trip I couldn't differentiate between the two.

After I started coming out of hyperspace, I went to flip the "on" switch for my speakers so I could hear some music, but the switch appeared to be completely missing. Like, the part of the plastic housing where the switch normally extruded looked, and EVEN FELT to my touch, like it was completely sealed over, and the switch never existed to begin with. It was so perplexing. For a good minute or two I thought that my DMT trip had somehow caused a glitch-in-the-matrix type effect, and reality itself was ripping at the seams. Pretty awesome.
I wish I could describe a bit better what happened during my last DMT trip. It really blew me away.
I wish you could describe it a bit better, too. :D J/K, I loved your description. But a DMT trip is one of the most difficult things to convey via language. Now I really want some DMT. I need to make some more.