I encourage mine to stick around, but that may not be for everyone, which is why I said to keep food and eggs put up. They don't become a nuisance unless they find food. They'll probably never leave the area no matter how many you shoot, if there's acreage and ample living space they'll always occupy the area.
According to the CDC only one person has ever died from a rabid raccoon attack. The signs of rabies are pretty obvious, and the chances of a rat, mouse, or snail carrying another type of disease far outweigh the chances of a raccoon carrying one even though raccoons eat all of those pests and some.
Not necessarily. Mine are not afraid of me, they hang out with me in the car port while I scoop feed, and then they clean up what I drop, but they will not get close to me, and i never encourage them to. They are still just as wild and cautious about people, they wouldn't be comfortable with a stranger, and I know them well enough to tell if something was off about one of them.
Raccoons that eat your animals, break into coops, growl, or rush at you should be put down. But in my experience if they keep mostly to themselves they are just fine to keep around.