>>1469041Because it's quintessentially American. There's no other place on earth where everyone who is on TV or movies has an absolutely perfect smile and unnaturally white teeth. There's no other place on earth where you see normal people you meet on the street have unnaturally white and perfectly straight set of teeth. There's literally nothing more American than taking a perfectly good set of teeth and doing invasive operations on them just for looks.
Note that when I say invasive operations I don't mean braces.
