As an introvert I don't think I could tolerate another human being that isn't my family for longer than a week let alone get to know someone enough to get married... Sounds like a waste of my time! That and I don't really feel any desire for romance, I don't really feel anything I've tried but that kind of love is beyond me.
I was thinking that the only people I would actually marry in this thread are the ones who are already married. This is very telling, it seems obvious, but the answer is really right in front of the eyes.