that's true, driving a truck for 40+ years, i came close to death and that's a fact too.
and i do know about your operation.
but i started working like around 11 maybe 12 years of age, in a gas station, pumping gas, checking oil, cleaning the windshield.......that used to be an ordinary job in gas stations.
i cannot sit still
even though i too have had numerous operations, like a total (this far) of 4 major back operations, which the rods go from my L3 down to my S2, and screws into my pelvis/ulum area, and i'm talking like 3" screws.
i been cut open from that L3 down to my butt crack, and that ain't no joke.
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like you i can barely walk, cannot stand for long periods of time, and cannot sit for long either.
when i shoot, i have to lean lightly on the shooting bench.
but i still shoot, with iron sights, and no bench rest.......
but to me, retirement still sucks.