Just for fun, what are/were your reasons when you choose/chose a spouse for your character? Here's a list of mine (from what I remember):
- Ysolda is my first character's wife, and I literally picked her after looking through the list on the wiki a few times and deciding she was the best looking one. Shallow, I know.
- Vilkas - because I wanted my Companion character to have a Companion spouse. Ended up going with him because he is smart (and I don't find Aela appealing for some reason).
- Hilund - I was just too amused by her Riekling spear fence. Plus, I think she's quite pretty, and I wanted to bring someone from Solstheim to Skyrim for some reason.
- Erik the Slayer (through console) - I just wanted to test adding NPCs to factions through console.
- Borgakh the Steel Heart - wanted my orc to have an orc wife, and I thought he'd be able to live with her at the stronghold, but alas, apparently he can't.
- Quintus Navale - I wanted to see if I could get the bug where Nurelion's dead corpse would fall from the ceiling and ruin the wedding, but then it turned out that the bug got fixed in the official patch. Oh well.
Also married Quintus again with another character to see if I could reproduce another bug, but that doesn't count. I'm currently trying to pick a Dunmer spouse for my Dunmer vampire assassin character.