I see a lot of sense in Hamster's first post. Doing something part time is HEAPS different from doing it full time. Also... Pottering about the house doing whatever YOU like to do is very different from being at home focusing on what is GOOD FOR children... I'd imagine part time work might start to feel like welcome relief from the later...

I think that given that your husband also hates his work... Sharing the work vs homemaking responsibilities might be the fairest option. Perhaps it is about trying to work your way into part time positions that you both feel happier about?