This is interesting. I didn't marry young (or at all), had a baby on my own at 37, had finished residency and had been an MD for a few years so I had some resources. Twenties and 30's were awesome but I still feel a real sense of optimism and excited for what lies ahead. I took 7 yo DD to Europe this summer and it was amazing. I started dating again so that's been fun. I'm not as skinny as I was in my 20's but now I have muscle which I like better.
I think the biggest determinant that I see in my job re: outlook on life is health, but it varies by gender. Healthy men are generally pretty happy. Healthy women...well, so many are taking care of other people that they almost can't see themselves at all, which I can understand.
I used to feel wistful about deciding not to marry, but that's faded, and DD seems to be an emotionally healthy kid (which is my real litmus test).
I guess tl;dr is ladies...focus on yourselves a bit more. It's really ok.
