We that have survived long enough to be a "senior citizen" are bound to have issues. I am now what I consider recovered from a bout of acute protatitis, but still on Finestaride to help the prostate to continue to shrink. Recently, I have gone up to 5 hours without urinating. That is life changing. I have chronic spinal and shoulder issues that are not going to go away, I have to accept the limitations, and deal with the pain when it happens. Ice packs and I are very acquainted. I think I am finally ready to fully retire from the working world. I have to watch my spending and just say no, need not want. Regarding cycling: I have learned to enjoy slow paced, casual rides; made adjustments on my bike fit as necessary, not as flexible or strong as once; sold some of the components I have been holding, that leads me to wanting to unload more; not so hung up on weight, speed or number of miles, enjoy the surroundings much more.
IMO, one of the keys to getting old: Accept that physical and mental deterioration is going to happen, but do not surrender to it. Stay active in your life. My idea of happiness is now more about contentment, being ok with what I have, and who I am.
I very much agree with OldTryGuy, I am not young, and have no desire to be so again. I used to hate "It is what it is", but it is so appropriate for so much. Age related issues certainly fit. Great attitude OldTryGuy .