What's a 'deal-breaker' for you when it comes to a possible relationship?

[Aprilgold]

Can't handle different opinions.
Thinks that the only reason to have an "argument/discussion" is to be mad and throw things around (basically can't handle when people expose logical reasons for their opinions and think it's an actual "violent" argument)
Racism
Socialism
Creationism
Vegetarianism

Can't be a smoker.
Can't be a drinker.

Non-smoking and non-drinking guy here. I am curious to know what makes you dislike the people that do.

I don't drink and because of that my girlfriend doesn't drink either, even though I told her it doesn't offend me in any way.

Smokers I don't like because its one of those things where its just slightly disgusting and causes problems to the lungs, I'd rather he be clean and live heathily with me.

Drinkers feel like stupider versions of their-selves and I just don't like being around them.

In conclusion, I would prefer a clean man that either drinks very little and doesn't smoke or does neither, because its just more enjoyable that way.