I'm in exactly this space.
I'm keeping my job. All the stress will be worth it when I come out the other side of young kids, and we both still have careers we enjoy, and neither of us is expected to be the house-elf to the other.
TBH, we're looking at retiring before we're 50, and we'll be able to do that because we both earn, so whilst his job is full on, to earn that much money it would have to be, I've been able to freelance/structure my work around the kids and still earn a tidy amount.
There are definitely days when I think I could just stop work, spend my days keeping the house up to scratch and indulging the kids, and doing my hobbies - but I don't want to spend my days cleaning and being responsible for dirty socks, even for a nice house, and more importantly I don't want DP thinking that I am.
I suspect that even when we retire, I'll keep working part-time as I genuinely enjoy my work - 2 days a week would be perfect, so I still have plenty of time for everything else too.