Why doesn't foreskin grow back?

[OfDeath]

The only things which grow back are things which keep growing. Fingernails and hair for example. Foreskin neither keeps on growing, nor does it grow in cycles like eyelashes for example. It is a much more intricate part of the anatomy than those things and contains thousands of nerve endings. Some animals like salamanders and spiders can regrow their limbs. It's very complicated to explain but they are able to generate a particular type of protein which their genes allow them to produce which helps the process along, a process in which the details are far too arcane for me to explain. To simplify it (for both our sakes) humans haven't evolved this ability and strangely enough, the salamander genome is actually larger than the human genome which is what has allowed them to develop such astounding natural abilities. Even if we did share this ability with salamanders, I'm not sure it would extend (no pun intended) to penises.

[jshm2]

The same reason limbs don't.

Human cells are not capable of complete regeneration, like those of salamanders.

If we could, we would likely not live longer than 10-20 years

[Hanoi_Jane00]

Because its not you nails or hair its a part of your body. I like the extra girth guys with foreskin have when the hood pulls back during sex.

[Browneye57]

For the same reason your dick doesn't keep growing. :)

[Chris633]

Mine did so I don't know what you're talking about.

[poneglyphs]

never thought about this, but that is an interesting question.

[COMMODOREII]

Because it was cut off?

[Anonymous]

Probably the same reason a toe won’t grow back