Here's a saying I came across, "No one wants to get old, but it beats the alternative."
I can't honestly say that thinking of that saying makes me feel any better about aging, but I'm sharing it anyway.
At the same time, I don't look back and think, "Gee, I'ld love to be 30 again." There's no year of my past life that I would particularly want to relive. Sure, it would be great to wake up in a youthful body, but only if I could retain my experienced mind. I really don't envy younger people. They have a lot of stress that I don't have.