Wow, I feel incredibly laid back after reading this thread. I'm incredibly niche about the women that I end up fancying but there's only a few things that would break a relationship for me. There's the obvious ones (cheating, stealing, bad natured lies), but beyond that, I dunno. I mean a lot of the things here people are listing are stuff that would prevent you getting into a relationship in the first place, not things that would ruin the relationship.
I am also surprised by the amount of anti drug posts actually, most of them seem to be under the impression that anyone who does them is a bad person and will invariably end up depending on you to support their habit.
Even if the person I loved ended up doing smack, I'd stay with them, because I love them, and would want to help them get through it, because well... it's not a very nice experience. Leaving them because they're doing Heroin isn't going to do them any favours, and would only exasperate the problem 100 fold.
But seeing as the topic has changed nature I'll play ball. Although mine tend to stem from pure incomparability issues, stuff that would cause issues on both sides. I'm quite happy to compromise and try and work round stuff.
-Issues with getting blind drunk: I like to get hammered, if you can't deal with that, it likely wouldn't work out.
-Strong anti drug stance: If you don't like em fine, and if you don't want me to do them around you, sure fine, but I like my drugs, therefore I am going to be doing them.
-Really girly girls/ strong "Female" sensibilities: Yeah I essentially like women who are men with a girls body. I want a girl I can get smashed with, be myself, be crass around, and act like I would around my male friends without reprimand. This also extends to the faux equality problem some women exhibit. If we're having an argument, you can't just use the "storm out and cry" approach, it makes the problem worse and doesn't solve anything. It shouldn't then just fall to me to repair the problem regardless of who's at fault. And vice versa, a relationship should be totally 50/50.
-Strong religious beliefs: I have no problem with religion persay, but I am outspoken about certain things, and given my personality I can't see a relationship working with that, as I'd likely offend them on a regular basis.
-One sided sex: Okay obviously if you're in a relationship you can mix it up, given you're going to be sleeping together on a regular basis so you can do one sub one dom on rotation or whatever. But I don't want to be doing all the work all the time. I like to view sex as a "competition" to see who can out-fuck each other basically, more of the 50/50 view. Plus I like experimentation on both sides to make things more interesting.