> How the fuck do other grownups do it? (I'm 49, and exhausted all the time)
I suppose the answer is "they don't". I've found that I can't really commit to any side project any more because my time off is not consistent.
Also:
> 5pm-8pm doing stuff with the kids
You're a better parent than me. I have such days, but I can't say I spend this much quality time with my child every day.
In any case I have a friend from two previous projects whose child is just two weeks older than my toddler, so we compared notes regarding this and many other topics.
Summary of what's definitely possible with one child:
-Inviting grandma/pa over - provided they live close enough.
-Scheduled leave from parenting - like one evening a week. The other parent takes over.
-Cleaning person. Personally I just get up every hour from my office and do some chores. It's not enough, but it helps.
-Nanny.
-One parent as the homemaker.
-Natural tendency to sleep less. I have maybe 7h of sleep ahead of me right now but somehow this is fine. Perhaps I'll pay the price for this later in life, who knows.