We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
I have warned about people who make New year resolutions to exercise but, in case you are one of those who do so, do me a favor and get a Stress Echo first if you are a male over 40 or in bad shape over 30, a post-menopausal woman, or anybody who fatigues with either extended activity or exertion.
A Stress Echo not only can identify heart issues before they appear in daily life, but can give you a metabolic physical stress tolerance baseline. Most Stress Echo protocols push you to your max unless you have prior identified cardio-pulmonary disease, so the attending cardiologist will be able to give you a thorough cardio fitness assessment and a numerical metabolic fitness level. (This test is required regularly for firemen, pilots, athletes, etc.) Serious fitness trainers also want an OK before pushing their clients hard.
I've hiked (backpacked) about 400 miles on the AT- not a huge deal but it's not nothing either. Lately had noticed a problem with building endurance up so went to Dr. Had a cardio stress test and was in the hospital that afternoon having two stents installed. Used to joke after spending a few days backpacking the AT that I passed my heart attack test- I was just lucky.
Your point is 100% valid, but I'm 75 and have health issues. I make and keep appointments with my oncologist because my wife wouldn't let me flake on it. I must have a GP doctor because I'm on blood thinners but I avoid or cancel appointments with him, I stopped seeing my urologist because his methods feel too intrusive. I do go to my dermatologist because he keeps finding skin cancers. But my point is I don't want doctors intrusive tests and fixes anymore and at my age I would simply prefer a sudden and massive heart attack halfway down the Bright Angel trail to intrusive checkups.