DH came home at 6am this morning (Friday). He was at a work conference and then drinks/dinner last night. I woke at 1am and messaged him to see where he was. Went back to bed. He replied to say it was going to be a late one. No shit!--
When I woke up for work at 5.30am he still wasn't home. He had messaged at 4am to say his personal phone battery had died and was using his work mobile. He was at the mainline station. No trains.
He came home after midnight the night before. Not sure but very late.
He regularly comes home during the week after midnight. It's easily done if you leave at closing time the gaps between trains are longer.
6 am, however, is a different entirely. Selfish & disrespectful. AIBU that this is not great behaviour for an adult in their 40s with a wife and 2 young DC?
It happened before and I couldn't get through to him on either mobiles . I thought he had had an accident or worse. I was distraught.
He brought me up a cup of tea when he got home this morning and said "sorry". He then crawled into bed and started snoring. 

I woke him to tell him that he was in charge of getting DC to where they needed to be (different places) and I went to work.
He then messaged me to ask why I had left youngest DC for him to drop off when I normally do it. I didn't reply to that.
I've had quite a tricky two days "off" with the pre-schooler whilst DH has been working, yes, but also being taken to restaurants and for drinks. Maybe I'm being a tad resentful at being left at home holding the fort. Once he's out he just doesn't know when to go home. 