OK this is between us guys, right? Ha. Well..straight up: looks neater and cleaner, can make you appear um...more prominent, shall we say? (That is a main reason it is done in porn, BTW) Also (and here is where you all learn how open and forthright I tend to be): because it doesn't grab your hair if wearing a cockring, and is way easier to clean up the lube or lotion when you're jacking.
How's that for open and honest about one's self right out of the gate? Ha.
LOL...good topic...a lot of mixed bag of tricks
I first started getting rid of pubic hair decades ago before manscaping was even a word. For me it was a cronic case of getting ingrown hairs that would get so infected they would be purple and the size of quarters and take weeks to heal.
Then as I became more sexually active and has a few bad experiences with getting womens pubes in my gag reflex I started asking for them to shave too.
So for me it was a case of whats good for the goose is good for the gander as they say. As much as I dont relish a mouth full of pubes going down on her I certainly dont want the same for her.
And as one member responded...I really looked silly too at 18 with a dark tan but white pubes and chest hair. So not only did I start manscaping but getting rid of any body hair period except my head which I keep very long and tidy