You are so right! And as for me, I think I'm probably the happiest retiree on the forum, or one of the happiest.
When I was 13, my mother told me "These are the best years of your life". Yikes. I was dealing with mountains of homework that I had to do after bedtime under the covers using a flashlight until the wee hours of the morning. I also had to deal with mean girls at school, hours and hours of chores that I had to do after school, and big varsity football player brothers who thought it was entertaining to beat me up and listen to me squeal.
Those were definitely NOT the best years of my life, Mom!!
But my years in retirement have more than made up for all that. The older I get, the better my life becomes. Everything now is just as I'd always dreamed it might be some day. And that's the honest truth, for me anyway. I'm so glad that I made it to 75 already, and hope to live many more years.