You know what I've always wondered?

[Clueless Morgan]

I wonder a lot about things to do with the way our bodies evolved.

One I was wondering at the dentist the other day is why are tooth nerves so ridiculously sensitive.  What use would pain be that it causes so much suffering that someone can faint from it.  In a situation where you're going with pain, it means there's some kind of a threat and a problem to solve, what is the benefit of going out of your mind with pain to the point of being unconscious.

Why do teeth even have or need nerves?  Once they're grown in, what's the point in having these bony protrusions meant to mash and masticate food into a literal pulp be these sensitive things poking out of our gums?  Is the tongue not sensitive enough for the mouth to figure out what it's doing?

I can only conclude it's one of those evolutionary things that didn't have enough of a disadvantage that it was never selected against.

Does an orgasm feel the same for a man and for a woman?

Can an animagus transform himself (or herself) into a human of the opposite sex and find out the answer to the above?
Or do animagi only transform into animals of the same sex as themselves?
Can they transform into hermaphrodites? or species that change gender as they age? Or asexual species?

(1) you don't have to become an animagus to answer these questions, you just need polyjuice potion.  We already know from Book 7 that you can use polyjuice potion to transform into a person of the opposite sex because Hermione and Fleur both transform into Harry when they go to get him from the Dursley's. (I am a huge nerd, but I also happen to be reading this book at the moment so it's not all super-nerdiness that causes me to know the answer to this question)  So, the answer to your "could you find out" question would be yes, as long as sex happens during the hour you're transformed using polyjuice potion. *

(2) I would presume that an animagus transforms into an animal of the same gender as oneself, unless the animal is inherently hermaphroditic like some kind of worm or if biological gender-transformation is an inherent quality of the species.  We already know that there don't appear to be species limits on what kind of animal you can transform into - like only mammals or whatever - because Rita Skeeter turns into a beetle, and there are fan theories that Dumbledore could turn into a phoenix - in fact, that he could turn into Fawkes (unsupported, IMO) - but we don't know if that applies to limitations like air-breathing animals: if you transformed into a fish but weren't anywhere near water, would you basically immediately die?

* Speaking of polyjuicing into another sex, specifically woman-to-man, while I understand that this is a young adult series and this sort of this wouldn't really be the sort of thing most people would be comfortable with their kid reading about, but Hermione comments on how bad Harry's eyes are when she transforms into him, but says nothing about that the fact that she now has completely different-feeling gentials, specifically genitals that now touch parts of her legs that nothing previously touched.  THAT would be the thing that I think I would most notice if I changed sexes using polyjuice, not how bad my eye sight suddenly became.

I don't know what sort of experience a man-to-woman transformation would have - would the experience of having breasts be similar at all to a scrotum? I suppose it would have to do with the size of said breasts and how impactful they are on the woman's physiology. :S

I have also long wondered why there isn't more illegal polyjuicing going on at Hogwarts, especially boy-to-girl transformations (for, I think, obvious reasons).  If a clever first year study can brew it, surely a NEWT-level sixth or seventh year could.  They have probably made it in potions, or, as Draco does, could have access to the properly brewed potion and be able to steal it.

SO MANY QUESTIONS!!!!!