I know that JMS's original plan was to have Peter be the father of the Stacy twins, but would that really have been a better idea? I mean, that would have made it look like Peter and/or Gwen essentially abandoned their children, since Gwen would have still had to have the twins without Peter finding out. So now we've got two kids languishing off somewhere, with neither of their parents ever taking a role in their lives.
Would this *really* have been a more desirable outcome for the development of both Peter and Gwen as characters?
Not to mention that I have an extremely hard time seeing Peter and Gwen having sex before they would be married. You'd think that a guy as obsessed with responsibility as Peter would be aware of the dangers of premarital sex and wouldn't have done it at all, or at least without taking every possible precaution he could have. Not to mention that Gwen became increasingly upset and moody after her father died, and I have an even harder time seeing Peter wanting to take advantage of her after that.
As bad as making Norman the father of the Wonder Twins was, at least it had the saving grace of only destroying Gwen's character, while leaving Peter's at least *somewhat* intact.