I'm almost exactly 50% towards my life expectancy. It's strange to think about. My perception of how long certain eras of my life were is...off. Grade school

I'm almost exactly 50% towards my life expectancy. It's strange to think about. My perception of how long certain eras of my life were is...off. Grade school felt like an absolute eternity, yet I've been with my wife longer than I went to grade school, and yet these last 13 years haven't felt that long. I've done 41 years, and can expect to do another 42.7, based on that site. Those 41 years have felt like a damn long time, yet each year seems to go by faster than the previous, so the second half will feel shorter than the first half. On one hand, that means retirement feels closer, but on the other, it means retirement will feel shorter.