retired or tired? -- old and woreout or just old?

About 4 winters ago I put up a lot of fence. Then the next Aug. I was draggin, and then in the hospital in the middle of the Harvey flood getting a triple bypass. Thats a story in its self.
It was hard to climb on a horses, and started my last colt about then. Now I can hardly throw that 4 pound saddle on one and it takes a mounting block to get on. I've had quarter horses all my life, and its hard to be without one. I tell my wife I need to sell them, and she screams NO!
I keep working at life. I just get a little (lot) tired'er a little quick'er!