On the bright side at least means he is a great, involved father, and they can see the contribution he makes as a parent!

DD (nearly three), half the time doesn't even see DF leave (due to the nature of his job). She does ask where he is sometimes, or randomly spits out "dad's in his truck!", or more recently asks where he has gone- by saying "dad's gone to....." and waiting for me to fill in the blank..lol.
I think for her it's just a given that he's often not here and will be back at some point..which is kinda sad, for a whole lot of reasons but not going to gatecrash your thread with them!

Although actually, she was pretty excited when she heard the reverse beep of the truck as he backed it in the driveway last night, demanding to get out of bed to see dad. This was at about 11.30......