Vanity mirrors in the driver's sun visor. Really?

My new Honda has a vanity mirror in the driver's side sun visor - a first for me. It's not bad enough that I have to content with women using their rear view mirror to apply makeup and guys using it for shaving on my morning commute every day; now there's the potential that they can use a vanity mirror in the sun visor too? Who's bright idea was that? Surely there can be no reasonable explanation for doing this. Drivers are distracted enough as it is now - did we really need to add just one more thing to take their mind away from the matter at hand? It does seem that car manufacturers are more and more interested in clogging up the interiors of our cars with useless junk, and less and less interested in keeping the driver accountable for piloting a 2 ton weapon.