"Your mission, should you accept, is to make your wife realize that she has it pretty good. You will only have 6 bikes. Anything under a dozen is note worth worring about."

I stopped making my wife come along with when I pick them up... We used to make a fun road trip out of buying them. After 3 dozen, she lost interest.

"I would then sit with a list of the remaining bikes (or the bikes in front of me), and determine what I use each for. I would figure out which one could be eliminated by increasing the usage of the others without diminishing my experience very much."

That's no fun at all... As would be with the girlfriends (I really am faithful to my wife), I want to keep them all... if not to ride, then just to admire for their beauty and charm

I say only get rid of the ones you don't like. I always kick myself for parting with the cool ones I should have kept. Maybe just find another place for a couple... Keep one at the summer house or cabin, or one at the parent's for when you're on a visit. (I won't suggest one at your girlfriend's...)

A MAN CAN'T HAVE TOO MANY BIKES...