I just turned 63 and am just now accepting that I am aging. I hear your struggle and it is very real...not unlike the other mile stones in our lives...turning 30 or 40? Becoming an adult? It struck me at 50 very hard when I my father passed and my mother came to live with us....then assisted living... My doctor was more concerned about my health than my mothers. If it doesn't kill you it makes you stronger....this is actually true in my case! I have more aches and pains now than my parents did at this age...but I believe it is do to life style changes...our lack of eating well and working in the garden or hanging clothes on the line....we do so much less and for me it hurts!
There are good things too...more freedom to do what you want....as soon as you figure that out. There are so many things to do for others and there are many more people worse off than us...no matter what we are going through...I just need to find them and reach out. My grandkids are big part of my daily life - not what it was like for me....I moved away from home...this is a big blessing.
Hang in there!