If a person (who doesn't have an irrational fear of guns, and isn't a control freak) doesn't want their spouse/ partner carrying in the house, then they must not have confidence in the other person's:
1. Skill with firearms.
2. Safe handling of firearms.
3. Emotional stability.
4. Judgement.

These are serious concerns/ issues. I'd have to ask myself why I want to live with such a person.