I don't like the idea of being old, I admit. At 56, I think I look pretty good for my age. I am at peace, pretty much with my body, and have been for awhile. I've been both too skinny and overweight, and both were not good.
Truthfully, I'd love to get a dermal filler for my laugh lines. DH said "go ahead and do it, if you want," but I am afraid of the side effects (allergic stuff). I've had these lines since I was in my 30's and they run in both sides of my family... the jury is still out; I will be looking for a job in a year and competing with people a lot younger than me. No gray hair yet.
I don't like having to take more recovery time after exercising. I haven't been riding as fast for the last 2 years, and I've had one thing after another with sports related injuries. I am looking at the long haul of being able to ride until I die, so I deal with it. Cycling keeps me young and if I have to go slowly as I age, I will. But, I still don't like it.