I completely accept that your experience is different Kira, I don't really see us as being on opposite sides of the fence we just have different experiences giving us different perspectives; both of us can be right at the same time in this kind of thing. RP communities in mmo's are large and spread across different timezones whilst individual players might only see a relatively small corner of it, so it's entirely possible for us to have totally different perceptions and both be 100% accurate.
I did say in my original post that I find the variety of different orientations and relationships etc to be an awesome thing, so I 100% agree with you saying it's beautiful. I did not in any way say that this diversity was disappointing, so please don't think that I did. What I said was disappointing was that for the last couple of years I have only felt like RP'ing a hetrosexual relationship and yet have been unable to find any interested parties with compatible characters, I have encountered three possibilites, one female and two male; I have both male and female characters but our characters whilst they could be friends just didn't mesh romantically. If I had wanted lesbian or homosexual relationships, I have met nearly a dozen different compatible options that in that same time frame.
I was speaking only for my limited experience in my tiny corner of the RP world, for example at this moment in time spread across 4 different mmo's, besides my own characters after a quick count. I know 2 straight male characters, 1 bi-sexual and 5 homosexual; 1 straight female character, 3 bi-sexual and 12 lesbian characters. Most of whom aren't interested in relationship RP regardless of their characters sexual orientation, but that's a different matter entirely.