I'm another one who thinks that "right now" (since I retired last year) is the best so far. I wouldn't re-live those drama-filled teenage years for anything! I had a few very good years in my early 20's, my "running around" years before I got married the first time, but that marriage wasn't good and the next several years weren't happy at all. Got married the second time and had my kids and this should have been my happiest years. But having an abusive, alcoholic husband robbed all the joy I should have been feeling when my kids were little and replaced it with anxiety, stress and fear.
But now ... I retired a year and a half ago and I've never been happier! The kids are on their own and doing well enough. Bad husband #2 is long gone, and all the stress and koi I used to put up with at work is gone now too. I do what I want, when I want to and I sleep till I wake up every morning! I haven't set my alarm clock in a year and a half! I'm not exactly rolling in money but I get by alright. My life now isn't exactly exciting now but that's fine with me. I'm still absolutely wallowing in the absence of all that stress. The only thing I would change is to be able to see my kids and the grandson more often but there's nothing I can do about that. For right now, this will do.