God has been good to me. I turned 60 this year and thus far have enjoyed remarkably good health. My vision is deteriorating, but it's just presbyopia on top of a minor astigmatism; that is, age, no serious conditions--easily correctable with lenses. Hearing is still good, though; I got good advice early on about protecting my ears. I'm not an athlete by any means, but am generally active and within 10 pounds of my target weight. My wife and I hiked 70 miles on a two-week vacation this past summer. My Dad is 91 and still alert and active, so I anticipate a few years ahead of me--even as I hold life with an open hand.
I still have a few years before retirement, and I'm hoping then to have more time to invest in the hobbies I love, especially hunting and shooting. Even so, I find I prefer lighter recoiling cartridges to the loudenboomers. My .300 Win Mag went away a long time ago. When I figured my .308 could do everything I wanted from my .30-06, the latter went away, too. I still have my deceased father-in-law's 7mm Remington Magnum, but I don't enjoy shooting it or my 7mm SAUM very much. The cartridges that I am enjoying the most right now are the .243 Win, .243 Ackley, .260 Rem., and .260 Ackley. I can shoot the .308 all day, and I have taken more game with a .308 than all the others combined ... but I find I am more and more attracted to its smaller caliber offspring (I might build a 7mm-08, maybe an Ackley, just for the fun of it).
I still shoot and enjoy my .44 magnum revolvers, but at this point I tend to shoot medium power reloads rather than full power magnum loads ... at least at the range. I have no interest in anything more powerful. And I shoot a lot more mild .357s (.357 mag cases loaded to hot .38 special velocities) than .44s. And I've pretty much gotten out of .40 S&W in favor of 9mm.
Part of the reason this "old guy" recommends getting into reloading is that one can tailor loads for application, but also for aging. I can keep shooting my favored firearms at reduced recoil, and reloading is a fun hobby in itself.
Eh, I'm rambling (old guys do that, don't they?). I feel for those among us who are in pain; by God's grace, thus far I am not. But I still feel the effects of aging, particularly with regard to vision and stamina. But I hope to be able to be shoot and hunt with my grand kids for many years to come.