Well I’m a guy and I’m not interested in sex all that much. Intimacy yes, and I’d sure like to have a relationship (yes, I’d like sex too), but I’m not that crazy about it. So by that logic, I can imagine there are many people who have no interest in sex whatsoever, and never even think about it.
I have a gay friend who is actually more asexual than gay, I think he’s sort of given up trying to find a boyfriend because of all the social complications. It must have been 2 years since he last got laid, and I’m pretty sure he doesn’t think about it much (though I could be wrong). And a straight female friend who is probably still a virgin at 37 and does not show the least bit of interest in men. She dated this one guy 20 years ago for maybe a month, and that was it. It’s not that she can’t find the right guy or that she got hurt or anything, it’s just so low in her list of priorities (taking care of her sick mother and disabled uncle, going to work everyday, feeding all her cats etc) that she probably forgets men even exist in the world.
So yes, different people have different levels of sexual drive, and some people’s urge could be close to 0.