I also want to know how big a prostate is when it's unfeasibly large.

It was a symbolic gesture in memory of the twin towers.

can let your wee-wee dry longer, like a sock on the clothes drying rack

You can dry your wiener with a piece of toilet paper.

There's a variety of reasons.

Firstly you're in less of a rush, so when the stream becomes a dribble you just wait. If you're standing you're more inclined to get impatient and rush off.

Secondly, the stream is easy to control but the dribble is more likely to fall on the floor, so sitting avoids that.

Finally, pushing your gooch from our asshole to your nuts squeezes out the remainder. Its way easier to do this sitting.

Yes, I'm an old guy managing an enlarged prostate.

I think it's more about how you sit, and the design of the toilet.

That's what someone with an unfeasible large penis would say!

Do you also pee hands-free standing up?

Doesn't matter how large or small your penis is, you can finagle it to not touch anything inside the bowl by just using your hands.