The only way what you say could work is if you don't clean yourself regularly, don't sleep well, have no friends, no hobbies outside of this website, don't plan meals/do any grocery shopping or cooking/ let your yard and house look like shit, EXCETERA
Bolded are the parts that are typical for grad school. (And, around exams times, well... let's just say I definitely remember guys talking about wearing swim trunks for underwear because they had run out of clean underwear and hadn't had time to do laundry yet.)
Also, come to think of it, underlined are the parts that sound like being the parent(s) of a small child or two.
Funny thing is I wasn't seeking to help either Rage or One L, but I feel like Rage is making himself look childish. I wasn't saying anything beyond a hypothesis that perhaps One L's wife helps keep the things going he does not have time to do. I have no idea what their arrangement is.
I do know there are indeed people (wives OR husbands- or even just significant others) who view having to step up their own workload in order to help their partner finish a life goal (like school) as a worthy investment in their future together and/or as something they feel they ought to do to support the person they love and have chosen to spend their life with. Not saying that's always how it pans out, but it certainly wouldn't be a particularly "out-there" arrangement for most of the housework and childcare to fall to the partner who *isn't* working full time while also going to law school- again, does not have to be about gender. Hell of a lot of work for everyone involved, especially with young kids, but I'd assume that
their assumption is very likely that it will ultimately be worth it.
And yes, single mothers do it alone. And, in less-common cases, single fathers do it. It's very difficult to do alone- especially TOTALLY alone (which is even less common), but can be done. So long as there's enough money, anyway.