[The marriage] didn't change Spider-Man at all! It changed Peter Parker a bit, I suppose. But the core characteristics of Parker/Spider-Man remained the same.
While overall, the wedding of Spider-Man and Mary Jane seems to have been embraced by a majority of fans, there are still those who will go on about how this ruined Spider-Man. I probably should shut up about it, but I do feel so very strongly about the "rightness" of MJ and Peter being married, that I really can't pass up an opportunity to finally respond to some of the nay-sayers.
The one objection that bugs me the most is the misguided belief that someone as beautiful as MJ would never marry someone like Peter Parker. This makes no sense to me! What a shallow, cynical thing for people to say. I suspect it's a form of projecting one's own self-loathing onto the Peter Parker character. Peter has been portrayed as an intelligent, sensitive guy since day one of comic-book life, and while he suffers from insecurity just like anyone else, he has dated wonderful, smart, attractive women all along.
For some fans to wear blinders and refuse to see the depths of the Peter/MJ relationship is terribly sad.
Yes, I'm perfectly aware of the "problems" Peter Parker has had with women over the years, but they've mostly been of the "I'm gonna miss my date with Gwen 'cause I gotta stop the Rhino!" or "I can never reveal I'm Spider-Man to Betty as long as she believes Spider-Man is responsible for the death of her brother!" It's NEVER been, "Oh, I can't get a date because I'm a nerd!" Geez!
There's also the more understandable objection, that having Peter marry a supermodel removes him from the "every guy" character he supposedly has been all these years. Except, again this completely overlooks that Peter has been dating beautiful women, or as beautiful as Ditko could draw 'em, all along! Why would a fan no longer relate to a character who marries a supermodel, yet have no problem with a character who continually dates the smartest, most beautiful women around?
Another objection is that having Peter get married ages the character, making Spider-Man more difficult for young readers to relate to Peter. Okay, I can see that, too. Marvel rather ingeniously solved that problem by creating Ultimate Spider-Man. You want a young, single Peter Parker--read Ultimate Spider-Man or the Essential Spider-Man or watch the first two Spidey motion pictures. You want the original Peter Parker, read The Amazing Spider-Man.