Hi there. Try this - look up the nearest outdoor range, and find out when they're having the next match, any sort will do. Go there, with ear and eye protection (your prescription lens glasses will pass in most places, any safety glasses will do). Watch how the day goes. Afterwards, consider how many times the same basic thing is happening, on any given weekend, across the country.
If you want the condensed version, look up USPSA, IPSC, IDPA, Sporting Clays, Trap, Skeet, Cowboy Action, 3-gun, or just Shooting Match on YouTube. The super-condensed version is, I sent two people to a single day competitive handgun class with 1800 rounds of ammunition, and they returned with ~400. I'm not talking "militia's", just competitive shooters. Then let's discuss the above...