Unfortunately there are still shark nets out on many beaches, which is a horrible and ridiculous practice.
At the end of the day, if you don't want to run the incredibly minute chance of being nipped by a shark (no, sharks do not actually eat people) simply don't get in the water. If you are fortunate enough to encounter a large shark in the water, watch it and be grateful to have seen a magnificent animal before it is wiped out for good.
Actually, i highly recommend that anyone who can goes and sees "Sharkwater". Its basically a summary of everything about sharks that i've held dear since i was about 5. I guarantee you it will change your perspective, even if you don't like the movie.
After all, in the end we will conserve only what we love, we will love only what we understand, and we will understand only what we are taught.
Thanks for all the comments guys, and vbsaltydog i recon retiring on the reef is a wise idea, you've never too old to dive.