I would have guessed middle-aged men and women, not just men. I think the reason is being the sandwiched generation.

Most of us had/are having kids late. Now our parents are old/getting old and in need of our support. Along with that, parenting expectations have never been higher. So between shuttling kids from one thing to another all week, and taking parents to medical and other appointments, there isn’t much time or energy left to enjoy anything. It’s exhausting.

Combine that with someone already depressed, and any unfortunate trigger could push them over the edge. It’s partly anecdotal and some of what I’ve observed.