I'm quite happy with what I see in every respect, including the physical.
Aging should not mean physical demise. Sure, I'm not what I used to be on a physical level, but you'd never know it by looking at me. I can still wear pants that fit me 20 years ago, and I'm actually stronger now than I was then, both mentally and physically.
Aging will happen whether we like it or not. It's what you do with your life that defines who you are, and the reflection you cast in that mirror.