I live in WA, in fact in Albany, where there are some mighty big sharks floating around, particularly great whites and hammerheads. The locals say it is a legacy of our whaling industry that there are so many big sharks down here. there are some impressive photos of blokes in boats shooting sharks with rifles to protect whale carcasses as they are brought in for processing.
I go fishing all the time, out in the boat, playing in the surf with the kids etc. etc. Doesn't bother me in the slightest. Have lots of mates who go diving, collecting abalone etc. and they just accept it.
Have always believed that we shouldn't upset the balance of things in nature.
Not trying to make a point here, just my view on things.