I find that I go through periods of just hating it....the drag of getting the DC ready....mid week is worst when they're tired and the long week stretches out. I hate getting ready....I hate smiling that early in the morning....it's 2 miles for me so means a bus if I've not got a lift....it's so frigging WEARING!
I know it's not like going down a mine or something....but what a fucking commitment! Twice a day EVERY day while they're little. All that "Hi...how are you? Cold isn't it!" drives me NUTS.