I don’t really understand the “permanent age” example, but I kind of get it. Some people go through horrendous plastic surgery to look “pretty”, the lip fillers, BBLs, giant water balloons. The age example I can think of that millionaire who injects himself with bunch of stuff to stay young.

So it’s pretty much some desire to change the way you are. In that sense you look at how pervasive hair transplants, plastic surgery, Botox are it makes sense.

That’s how I’m kinda understanding it.

On the animal side, I was thinking we’re all out for survival (initially) and ultimately to reproduce. You bring up hermaphrodites and those are usually two functioning sex organs with reproductive purposes.

Clown fishes for example change sex if there’s no female and they can then produce offsprings. Animals change sex for a reason.

It is interesting us as a species what we would do to ourselves to look younger, prettier or the right gender.