Yeah, it isn't unusual for DH to race out the door at 8 and not get home until past midnight then sleep 4 hours and do it all again. Throw into that the odd trip away and I spend a lot of time single parenting.
Poor DH gets the worst end of the deal - he works so hard and sees heaps less of the boys than he would like. He's really looking forward to taking half a year out next year to enjoy some time with the boys (and so am I)