Okay, OP, I get you. And of course I wasn't excusing his behaviour by suggesting he might not be cut out for children. It's entirely his responsibility to realise that beforehand or alter his behaviour.
I suppose what's difficult is to pull apart how much he's at fault and should be forced to recognise this and change where possible, or how much you are just ill-matched. For example, to say, shall we get a take-away and the other person to say 'not today, how about friday' would seem, in most situations, to be entirely fine and normal. When, as you say, it's about a strange, character destroying attempt to continually undermine or hurt you, that's not.
So many power issues can be addressed in counselling because, with a third party present, it's usually clear pretty quickly if someone is being cruel and or controlling, it's impossible to hide.
I would still be interested to know if this, on some scale, has always been the case, or if it started in a particular period. Particularly the name calling and snideness. And is it more common when you are alone or when he has an audience?
I think some of you posts read like you are keen to find support for leaving him and if that's the case I would definitely suggest reading that book. It'll give you as clear and definitive an answer as anywhere.
His parents dying relatively young could be a clue to his entitlement. Does he have any siblings? Sometimes, when family is lost or denied to people, even in young adulthood, it becomes increasingly difficult to accept the family unit as a 'given' or something to be automatically adjusted to.