1. You can be obese and completely not athletic to shoot a damn air gun.
2. There were no guns in the Greco Roman times.
3. It’s not athletic
Ok, so I don’t have that many reasons but I think 1 and 3 speak for themselves.
I also think there is something to be said about events that lack the competition between athletes at the same time in the same arena, where a judge decides winner/loser instead of having an obvious verdict. For example: Swimming is an individual sport, yet you are physically in the pool racing against other swimmers at the same time and there is a touch pad at the end to tell who is the winner. But in gymnastics, a girl (or guy) competes individually…then another girl later…then another girl. And so on and so forth. There is no clear impartial winner because the judges decide based on individual performances.
Now what really stumps me is that the air rifle competition falls in the middle. It has a clear winner/loser based on the target but people “compete” separately. Hmmm…