I'm 62.
My get up and go did that thing at 50, with menopause.
Yes, I've been on HRT since then.
But, honestly, I have lost any zest for life. I just can't be bothered. Hobbies I loved seem too much faff; travel (of which I've done a lot in the past) seems like a hassle, especially if it involves flying.
I work 'bank' in an easy enough job, I have a good DH, DSs still at home, one working, one post uni but still unemployed who I'm a bit worried about. I have some good friends, I'm not isolated.
I'm overweight, but I don't do much exercise, tho I know I should.
I don't think I'm depressed as such, and I also know a GP wouldn't take me seriously if I even suggested my flat mood might be 'more'.
Others listing their 'blessings' doesn't help!!