A quick and easy way to improve the Olympics

Whenever I watch competitive swimming, I can't help thinking that it's strange they have different races for so many "strokes." You're in the water and the idea is to swim a certain distance faster than your opponents. Obviously, the fastest way to do this is the crawl ("free-style") so why mess around with the backstroke, butterfly, and breast strokes. There are lots of ways to move on land as well: you can walk, you can run, you can run backwards, you can hop; but we have the sense not to invent events based on these methods of locomotion ("the winner in the 200 yard skip is .....) So let's drop all these silly strokes from competition and just swim, already. Agreed?