I was not aware a single quest meant you couldn't make up your own backstory.
Maybe my elf was homosixual, very ugly and can't get a girl, too shy to ask out any girls, or just plain does not like marriage.
It's not a single quest down the road that you might be able to avoid, it's the quest that introduces who your character is. A pre-opening sequence like DA: O will kill the openness that TES lets you have. You can role play however you want in TES and that character becomes more of "yours" that way.
I would only approve if it was less like how DA:O took it. The guy above me is making the same point. This could only work if it was open and vague and let you use your imagination more.
But I still like Skyrim's choice: Any race could end up in that predicament and it doesn't force a backstory, besides the fact that you somehow were caught crossing the border with a bunch of stormcloaks and a thief.