NL - Ok, that's interesting. I think it more accepted that Mum leaves to deal with emergencies or exceptional appointments etc. My expereince is that the mum is more likely to work part-time, and employers are generally more sympathetic to her need to have to leave.
DH hasn't been home before bedtime any day this week. If he did leave no would probably say, oh you can't! However, it would definitely affect his career. Working short hours has blown my career to pot - however, if he left too, it would mean we both suffered career wise - which I don't think is a good strategy for us as a family.
Also, could just be my DD, but I find she only wants me if she is sick anyway.
Serenity - I am not unhappy with the situation. DD has an involved bio-Dad, and I have paid doemstic help. I look at it this way, I have 2 days to chill at home with DD before the w/e. DH is exhausted - and expecting him to do childcare all day whilst I go out to relax would be outrageous. Besides DD (because I spend most time with her) is very bonded with me, and wouldnt' want to spend day with DH alone.
However, I accept that perhaps my views are skewed because the way we have chosen to set up our family stuff means that DH isn't much pratical help.