Killing sharks

In Australia they are after a great white shark which has had three people for dinner in the last few months.  These people were engaging in leisure activity.  That is, something rather trivial.  It doesn't seem right to kill a shark to protect people engaging in a trivial activity.  Leisure seekers have an alternative.  They can use a public swimming pool.  Or watch Jacques Cousteau films on Youtube.  Or both, with a waterproof laptop.