^Because, if everything else is great, you sound like a madwoman to say 'well, I had to divorce him, he never bloody picked up his socks and put them in the wash without me asking'
And what are your alternatives here? Because if you just stop doing his stuff, you end up living in filth. If you wait for him to take responsibility and sort out the kids dentists, all their teeth will fall out first.^
From what I have seen, these relationships are usually pretty clear cut already, before the kids arrive, and very often consist of women doing the laundry for both, the ironing for both, the cooking for both. Heck I know women, who drove the car from A to B, so the man could go kayaking and have a taxi. And this was never reciprocated.
Anyway, I, frankly, cannot see, why it would mean filth and rotten teeth if you don't do his laundry, cook for him and buy his toothpaste, in order to force a conversation on sharing some burdens. If that indeed means divorce for him, good riddance.