I am around 40, have one DC (3.5) and a very supportive partner.
We both WFH full time and spend rest of time (mornings, evenings, weekends) with a DC or doing house chores. I would not want to do it differently as miss DC very much while working.
Recently I started feeling sad and exhausted. Every day looks the same and while I generally love my life, I miss a bit of excitement and, well... Freedom? It feels that life was more interesting pre-dc. I can't shake the feeling that I am in prison and stop feeling sorry for myself all the time. It gets to a point where I can be depressed for a several days in a row.
Am I just an idiot that can't grow up and accept the adult life and responsibilities?