Those of us who like shooting like it because... well... it's fun. I'm a lifelong vegetarian so don't hunt, but I really enjoy perforating targets- it's a good combo of mental and physical activity. And it gave me a newfound appreciation for my wife; I'm pretty good with a handgun or a rifle, she is frighteningly good with both, and blows me away at skeet (figuratively).
My day job, as I've mentioned, is running a chemistry research group, specializing in surface modification, siloxane synthesis, electrochemistry, and corrosion management. Over the years, I've started and sold off companies in electronics (specifically force and position sensors for human-machine interface, with Microsoft being one of our big customers for some time) and wine (I invented the coextruded synthetic wine cork now used worldwide). And I spent a few years in the research grant game, sucking up a few million in American taxpayers' money to study endocrine disrupting chemicals in food packaging.
My night and weekend job is doing test and measurement reviews for AudioXpress. My wife and I also run a political discussion website under different identities to keep things separate from our professional lives (so don't ask, I won't say). This got rather more popular and time-consuming than we had originally anticipated, with about a million user-generated posts per year.