I didn't grow up around guns. Grew up in a major metropolitan area, and my dad wasn't a shooter -- his outdoor activity has always been sailing. I shot a couple of .22s in grade school, but didn't really develop an interest until my junior year in college when I joined the rifle team (indoor, small bore), sort of as a lark. I did pretty well, tieing the individual record one night (the same night the team captain broke it), helping to push the team record way up there.
After college, interest sort of went dormant as I pursued grad school, early career, and marriage.
Ah, but that last one! I married the eldest daughter of an outdoorsman with no sons. He and she conspired to give me my first firearm -- a Mossberg 500 combo. It's been downhill ever since! Wasn't long before I bought my first rifle ... then wanted a handgun to hunt in areas of NY where rifles are not allowed. The process of getting my pistol permit got me reading big time into 2nd Amendment writings ...
... and lo and behold, I'm now an avid shooter. I've become a certified Hunter Safety Instructor, and like nothing better than taking a bunch of kids afield to learn safety, and then marksmanship. My own kids will be able to say "I grew up with guns, and shot with my dad as early as I can remember."
I'm a shooter, rather than a collector. Everything I have gets shot, or I don't keep it. I've taken courses at LFI, InSights, and Storm Mountain, and am looking to take more. When time permits, I plan to get pursue NRA Instructor certification.
So why did I choose? Early on (college), to see what I could do. Later, to build a relationship with my father-in-law (we still hunt together every year). And now, because it is my civic duty!