Would I like a bicycle? Will it get me where I want to go with a minimum of fuss? A light would be nice for night riding. Maybe a basket. A luggage rack on back? Mmmmmm okay. How about a shock fork, well if ya gotta real need I guess. How about 3 speeds, or 7 or 10, heck lets make it 18 or 21. We can upgrade the tires and saddle and add a horn or a bell.
Wait what about a three wheeler? no wait that would be a tricycle. How about one of those peddle carriages that seat four with the fringe on top? Hmmm that's not really a bicycle either. If you really want to get there faster why not a motorcycle?
But then again if I want a motorcycle, what am I doing at a bicycle shop? Because what I really wanted to begin with was a bicycle for not too much money, that does what I need it to do and doesn't pretend to meet every transportation need that I may have for the rest of my life.
Is this not the bicycle forum? Oh well, just apply it to BIAB and there ya go.

Rob