The trailer gave me the impression that Bats was retired and came back out of retirement to kick some Super-ass.
Nothing made me think he had a wife and kids though. I wouldn't be happy with that. Bruce Wayne should never be happily married.
Yeah, I agree. I don't see anything about him having a wife or child. Letting his "family" die is probably a batman related thing (with Robin being his "family"), not him having a wife or a kid.
Except Jason Todd/Robin was clearly killed by Joker, hence the "Hahah, jokes on you!" graffiti on his armor, which Batman is maintaining in his vault.
Unless Joker knew Wayne Financial was going to be destroyed by an alien smackdown that day and tied Jason up in there like the comics just in case, it kind of robs his murder at the hands of Batman's arch-nemesis of any meaning.
On the other hand, the death of a wife/lover and possibly child provides tons of motivation for Batman to resent everything Superman represents, and has precedent in the comics too (Batman fathering a child, not Superman accidentally killing them while fighting Zod).