Like N2L, I wouldn't put up with it either.

My DH works from home so is always around to help out with the girls. I've had pretty severe morning sickness for my entire pregnancy so DH will often send me to bed during the day and supervise the kids while working. As soon as he finishes in the afternoon he starts interacting with them - takes them for a swim, play games etc. As soon as dinner is finished he either takes them in the shower with him or gives them a bath. We both put them to bed. When our new baby is here he will get up for her during the night to settle her, do nappy changes etc. He would never, ever tell me that he was too tired to deal with her, had to get some sleep because he had work the next day etc.

In the mornings he will do as much as me, just different things and depending on how each of us is going for time. He gets their breakfast while I'm making lunches for school. He makes sure they're dressed, but I do their hair always (self preservation!).

I am frequently told by DH that I don't do enough for myself, should have time out with girlfriends, by myself or whatever. Neither of us think parenting is the responsibility of the mother purely because she's the woman/mother - we're both their parents so its our job equally. He works all day, but damn so do I - we just have different offices! I don't ask him to do anything with them because he knows what has to be done. He does show an incredible level of support and commitment but I don't think I'm lucky - I just think I'm married to a mature man who loves me and loves his children and takes his job as a parent and husband very seriously.