I don't care about height, although all the guys I've been on relationships with were between 6'1" and 6'4"
My last relationship was 5'11"
I'm about 5'10" but apparently that makes me too short for a lot go guys dating preference. All the guys in my area want that tall muscular body builder look with a beard and long hair(a Portland thing really), so I don't seem to fit the bill for what most guys in my area want for a relationship.
I will say that straight guys and straight women seem to have a harder time finding relationships or lasting partnerships because height difference is a big deal to them.
I suppose it can be for the gay community as well because gay guys always idolize what kind of boyfriend they want(like shopping)
I don't mind a shorter guy, as I have had relationships with some, and a few with taller guys as well, so I really don't mind.
My height seems to be an issue, and I still can't figure out why.

Happy hunting.