"40" is the new "30"?

I remember my mom telling me that even though she is 60+ she still feels like she is in her 30's until she looks in the mirror. (Although she looks great for her sixties!) I also remember when I was a teenager thinking 40 was SO middle-aged! I looked at my mom when she was in her 40's thinking (although she was pretty) she looked so "like a mother". It's amazing and scarey how time passes by and yet we don't feel any different. Will we still feel young and the same even when we are in our 70's and 80's? If so, how frustrating will it be to see our bodies much older than our spirits? I am contemplating these things lately as my own sister turned 4o just a few days ago. Being only two years younger, it makes me realize how quickly that day is approaching for me. As my 20 year high school reunion is being celebrated this summer, it brings me back to my high school days and I honestly don't feel much older. I recall being at my 10 year reunion thinking "oh wow! what will all be like at our 20th? That will be the biggy!" Well, here it is and I still don't feel any different. Yes, I have matured (hopefully) and I have aged a little. I have become a bit more "saggy" in areas and have noticed several gray hairs (thank goodness for coloring) but I still feel young. Have we become more "hip" so to speak? Do we dress more youthful than our parents did at our age? Are our haircuts the same as most of the teenagers so therefore doesn't separate the "young" from the "mature"? Are our anti-aging products better? Or maybe I am looking through "rose-colored glasses" and don't look as young as I think I do. All I know is I look at my sister who is now a "middle-aged" mother of five with a son in college and I think she looks pretty darn good!