Two things you need to know before you read my brilliant idea below:
1) My wife is an actual, certifiable genius (in the sense of having an exceptionally high intelligence quotient, not in the sense of being either a tutelary deity nor in the sense of being "slightly smarter" than average people).
2) I have an actual phobia of sharks. Not a reasonable, "One should not swim with carnivores larger than you with many rows of sharp teeth" but a "I don't like to swim in swimming pools in the dark just in case a 15 foot long shark somehow got in here" and "I am a little nervous about posting pictures of sharks to my blog" full-fledged phobia.
MY IDEA: What if we lifted all the hunting restrictions against great white sharks and killed them all dead?
MY ONLY CONCERN: Would this create a huge imbalance in the ecosystem that would eventually cause the earth to spin out of orbit and into the sun?
MY THESIS: No, it wouldn't. We would be fine, in fact better without the nasty sharks everywhere. Yuck! I don't like them one bit.
MY RESEARCH: Krista's (my wife) thesis for college was called "Stability in a two-population predator-prey interaction". In this paper she proved mathematically (using chaos theory math and a whole bunch of other voodoo) that the introduction of a certain predator fish to this lake in Africa would inevitably result in the destruction of the native species (she was right). So I figured she could give some insight into this question of whether destroying every great white shark on earth would mean minor inconveniences or a happy happy place for all of us.
Krista falls into the "skeptical of the benefits of killing sharks" camp. She claims this would create a massive shift in the ocean's ecosystem (although she admits it would likely balance out eventually). Her argument is much too lengthy, intelligent and probably-right for me to include it here (it would undermine my own argument).
As a rebuttal to her arguments, which I will not include here, allow me to say: I bet there would be more dolphins and more fish we like to eat if we eliminated sharks.
As to her disturbing question, "Don't you think God made sharks for a reason?" allow me to answer, "Yes, as a punishment for eating from the fruit of the Tree of the Knowledge of Good and Evil."
CONCLUSION: I know you agree with me. Look, for instance, at the following pictures. One is the ocean with sharks, one is the ocean without sharks. One is a picture of the tooth of a significantly-larger-than-a-great-white megalodon, all of which are extinct and I think we are doing just fine without them. Okay, to be honest I chickened out. I am not putting even a picture of those things on my blog. But you know what they look like.
Christmas list addition: harpoon gun.