I never have to clean a bus, or put gas in it, or change its oil. I don't even have to drive it.
I don't have to dedicate a big portion of my property to storing it, just to pay to park it somewhere else when I go out. I'll never get a ticket for leaving it in the wrong place, and I'll never have to go to court because I used it wrong.
I don't have to worry about it getting stolen, or crashed into. I don't have to worry about being unable to afford the insurance or registration. I don't have any wealth tied up in it, so its deprecation doesn't matter.
Having to walk a few minutes at the start and end of my journey is a small price to pay for such convenience.
And if I ever do need one, I can rent one for less than the average American's monthly payment. In fact, I can rent the exact one I need that day, which might be a pickup today but a minivan tomorrow.