You know he'll be very lonely too, it's not great living out of a hotel.
My DH has travelled an awful lot since the children were small, and I hate to say they got hardened to it, which was sad in a way.
However, we never dropped him at the airport, never did big goodbyes after some hideous experiences at Heathrow, but focussed on the coming home.
He only brought them something from his trip if it was more than 4 sleeps, he travels all over the world
My two couldn't cope with Skype etc as they couldn't bear him being there, but not there, which was very tough on him, but it used to break their hearts, getting teary thinking on this.
When he got home from a trip he'd want to just be at home and we'd want to do something exciting, we had to work that out, and sex lives too, lots of pressure in poss a few days, all a bit confusing really.
Last year he was away for over two thirds of the year, but all on trips no longer than 3 weeks.
My kids are older, and he is sad he doesn't have the closeness of the relationship that I do with them
Its not great but it is what it is, we do get lots of benefits too, lots of travel etc, but it wasn't like this when we got together, he had a day to day job and was home every night. i just hope he doesn't have regrets