I don't subscribe to the N+1 thing.

We recently moved to a new part of the country for my wife's new job -- which roughly doubled our household income, even though I retired fully at that point. She told me to buy a new bike, no price limit...But for the best type of riding in this area, I already had a great bike. So I didn't buy a new one.

As conspicuous consumption items, bikes are great since you can easily show them off to strangers. But I'd rather have a larger retirement plan than spend money on a bike I'll only ride occasionally. And the more bikes you have, the less frequently you'll ride each one.