I've had four skyrim characters, never had any of them get married. I absolutely hate games with tacked-on marriage systems that don't really change anything in the game. I remember being really ticked off when all I had to do to get a wife in Fable was run her around town for ten minutes and time a couple button presses right so I didn't kiss her the wrong way or whatever.
And Skyrim's... Well, it's even worse than that. Do a quick quest, wear a special amulet, bam. The character's dialog barely even changes, from what I've heard. Not only does it seem pointless, but the complete lack of change in the game because of it would break immersion for me, a lot. I'd rather keep my characters as single guys, roaming around Skyrim taking on whatever adventure befalls him with no worries or obligations to stop him.
Since, you know, that's kind of what skyrim was built to be.