I retired 20 years ago and before I retired I bought a cattle ranch. In addition to the never ending work, i'm blessed with outstanding waterfowl and deer hunting. The pheasant and Grey Partridge hunting is good as is the nearby mountain grouse hunting. Trout fishing is as good as it gets as is the local elk hunting.
You will soon wonder how you had the time to work. That said, it depends a lot on the individual. I know some guys that couldn't handle retirement and went back to their respective companies as consultants, but they were not hunters and fishermen.
Good Luck.