Primarily ... Enjoyment, stress relief, getting to understand how these contraptions work,
Secondarily ... Target Practice, pesting
Third ... Shooting limbs and vines down that get in the way of my shooting on my target range
Fourth ... A warm coffee in the morning and a good Wildcat full of ammo is good to the last drop
Fifth ... Heck ... Ya gotta have some reason for getting up in the morning when you are retired, mine is to get better and better at what I do ... shooting pellets
PS I would highly reccomend that each and everyone of you find something before you retire that you truly enjoy doing, otherwise you are just waiting to die.