X2! However, my eight-month old cockerel is doing pretty well for not having a male role model. My seven older birds (all pullets) are eleven-months old and kept him in his place while he was figuring things out. Even though he’s young, he tidbits, dances for them, escorts them, finds good nest areas when they’re free ranging, herds them, watches the skies and for ground based predators, calls when he sees something scary, breaks up the bullying, and is not aggressive with people. It took him a while to figure out the mating part (I laughed at him, I’m not ashamed to admit it), but a lot of the rest of it he started doing by the time he was five months old or so. I’m holding my breath about the upcoming hormone surge in a couple months, but so far, he’s a keeper!A good rooster does a lot of things that help to protect their flock that often go unnoticed.
As others have correctly ime, mentioned; cockerels are pretty all round hopeless. That's youth in any species. If they don't die and grow up in a mixed age flock with a senior rooster, but often more important, a senior hen then the survivors will learn. It seems to me the poor cockerels aren't in with a chance with some people and are expected to know what to do and when to do it because they are males.
What about your hens? Maybe they feel safer having him around. Maybe the hens like how he stops the usual hen bickering, maybe while they're busy stuffing their faces while he stands guard they feel more secure. Maybe when they go to look for nest sites they like to have a cockerel, or rooster accompany them. Maybe they like the mating knowing that if that big predator on two feet doesn't steal their eggs they might be able to hatch some chicks.
Maybe people who want to keep chickens should learn a bit about what motivates a rooster and what he actually does for his hens.
Of course, if you just want to keep a few hens and not really keep chickens at all, then by all means don't have a rooster.