T-man, you remember killer bees? well, you are more likely to die from africanized honey bee attacks than ever even being touched by a shark.
You are more likely to die crossing the road tomorrow, or falling off a bike and killing yourself, than you are of even seeing a shark that can kill you. The man eaters in the world are the great white, and their numbers are very few and far between, the bull shark, which rarely kills anyone, the tiger shark, which is far more dangerous than a great white but that you will only meet in warm tropical waters, and the great hammerhead, which you have to be out in the middle of friggin nowhere to get nabbed.
Let's put your fears of sharks into perspective man.
Also, if all sharks dissapereaed from the world, the oceans would die. That's great eh?