There is no question, learning is hard work. And if you are a bochur (or a newly married man, with no family to feed) you have a full day’s work ahead of you.
But if you are the parent of children, your job is to provide for them, and allow your wife to stay at home (at least most of the day) until they are grown so they can benefit from her nurturing.
Still, you are not off the hook with learning. None of us are. But providing for your family is your tafkid (read the document you signed… its pretty straightforward)