I can see using a pistol, shotgun and/or an assault rifle for home or auto defense, but unless you have some clear shots at long ranges, I can't see the need for a long range rifle in that role(not that I wouldn't want one for other reasons). If I should ever need to defend my home or car, I want something that I can handle in close quarters. I don't think that any thugs will be considerate enough to back up 500 yards so that I can defend myself with a long range rifle.
Agreed, I've just got a little something for all occasions.