I don't think 'everyone' will be exposed to gun violence but saying that you won't unless you're around gangs or have one yourself is incredibly naive.

Personally, I'm early 40s, never owned or wanted to own a firearm or have been involved in 'gangs'. In the last 20 years I've been at a bar where two guys came in with guns and started firing, been mugged at gun point a block away from the University of Florida, been blocks away from a mass shooting (Madden one), and been in an area where guys in truck drove by and shot out the windows of closed businesses. I hope most people don't experience gun violence but it's can certainly find you in all sorts of circumstances.