My standard answer to that question: I'm having a midlife crisis, but instead of chasing women I'm chasing guns.
I started watching shooting videos on youtube. And it looked like fun. I don't actually carry a gun unless I'm at the range. Were I live I don't feel its necessary, yet. The way our culture is going in the US it may become necessary. Which is sad.
I mostly own .22s which is one of the smaller calibers mostly used for hunting squirrels and rabbits. I only use it on inanimate targets, mostly paper. Though more people have been murdered with 22 handguns (they used to be cheap and the ammo is still compared to other calibers) than any other, they're not generally considered good self defense guns. I wouldn't care to be shot with one though.
I'm found out I'm old fashioned when it comes to gun (which is not a surprise i'm general old fashioned), I prefer revolvers to semi automatic pistols and although my .22 rifle is semi automatic I'd really like to get a lever gun (see The Rifleman opening credits on youtube). I don't own a shotgun, yet, indoor ranges don't allow them, out door are generally shooting clubs. An outdoor range is supposed to open up just outside of town next spring.
I'm having an experience I guess most gun owners have had and one point, a malfunctioning gun. One of my revolvers something in the connection between trigger and hammer actually broke and the gun is back with the manufacturer for repair.
Annoying because it was the first time I shot the brand new gun.