Do you think Marriage might enable kids? I wonder what this would bring to the table, though i think marriage is about as far as Bethesda will take it. Todd Howard also said in the same interview that the player can continue to live beyond the last main quest so there must be something to develop the character further after this...
And if it does allow you to have kids, i wonder if you can be an Argonian, and marry a Khajhit...
And if it does allow you to have kids, i wonder if you can be an Argonian, and marry a Khajhit...