Yeah, that works if you don't have the next kid at 23, and the next at 26, and the next at 30, and the next at 31, etc., etc.
I think everyone would be happier if each gender recognized that the work of the other is difficult, stressful, and sometimes unrewarding ... but it has to be done, anyway. Being an adult means responsibility, one way or another.
Sometimes one works harder than the other, but I think that shifts over time to average out in many cases. Kids are a job in and of themselves, but they grow out of those toddler years and the work load lessens to where they can help clean up the messes they make - on the same token one hopes that if the man stays in his field long enough he will move up from the labor to management where his physical load lessens and his mental load increases (akin to as kids grow they can be bettered managed to do their share, but their problems move around so you have to spend more mental energy helping them deal with their problems then physical cleaning up their messes.)
Hopefully, it works out for both. Keep up the good work!