Why is it a big deal?

I dont see why you feel so strongly about keeping it. I usually shave but if my wife wanted it hairy I'd grow it out. I dont care about the hair that much. You should consider doing it if he likes it. Unless its that important to you. Its 2021 a lot of guys dont like hair on that so it's not unusual to get guys that would want it shaved.

What I think is that it's your body, and you should do with it whatever the hell you want.

If it is true that literally every guy you've ever been with has commented or criticised you for having pubic hair, then my mind is boggled. I can only assume that you have some sort of infallible radar that allows you to always go for guys who are asshats.

If your boyfriend is so keen on bare genitals, tell him to prove to you that it really is no hassle to stay hairless and stubble-free down there by shaving his pubes (front patch, dick, balls and ass-crack) every other day for six months. Once he's had a few nicks and ingrown hairs and you've mentioned a few times that his stubble looks very un-sexy and feels like sandpaper, he might change his tune. Or he might decide to go find another woman to shame, which would probably be for the best as far as you're concerned.

Not only is your boyfriend a dickhead for criticising your personal grooming choices, he also sounds like he could be one of those ignorant, closeted misogynists who secretly believes vaginas are inherently dirty and disgusting.

why do you think we have hair? It's to STOP bacteria from getting inside the vagina. He's a dumbass. I have never touched a razor down there and never let anyone tell me what I can do with my body. But then again I don't need or want a man (or woman) anyway. I'm not gonna increase risks of being uncomfortable or in pain for someone else's opinion of what's "attractive". I'm not gonna risk getting ingrown hairs, itchy, spending money, and possibly hurting myself.
And for the record, I think men's hairy penises are fucking gross, but I'd never tell someone to shave.

It's the same way asking your partner to wear a certain color cloth or type. Asking a man to shave or grow a beard. Asking a women not to or wear short dresses.
People have different opinions. And to defend what ever opinions we have, we always have a reason. And I don't think you would have bacterial issues (a small chances of) as he claim because it's not like you don't clean your self. But that's his point of disliking what he dislike. But at the end of the day it's a unharm decision to make and that choice is yours. Same as your opinion stays to keep pubic hair, he will keep asking to shave it off. Both will not change. One has to sacrifice their opinion if a change is needed.
And it's mostly your choise to make but still don't down think of him because of that because, who else he's gonna say that. Your best friend? He'll keep ask.
But you can keep what you want. Don't get bothered by his requests. Try to play it off. Because at the end it's your choice is what's there. So he'll feel defeated so you need to balance that out. You can be as your want. You win. He will be bit bothered by defeating so it's winners work to cool off the looser.

I'm thinking he wants you shaved because it reminds him of younger females. Or maybe he is bi or gay and not telling you. Is he really neat freak at home as well ? Guys that tend to be neatfreaks at home seems like they dont like eating kitty. Now I would maybe ask a woman to trim somewhat simply because the long stragglers get stuck in back of throat. And those suck.