Now I feel weird because the discussions here are great, in depth, and nuanced, but the way I feel about this is kinda boring and uncomplicated? Am I missing something?
If I'm playing a customized character that I made, I prefer characters to be playersexual, allowing custom relationships to match my custom character.
If I'm playing as a written character and experiencing a set story, it is better for all characters to be written well, and have realistic sexualities, as part of the story presented.
As far as representation goes, I think both can have problems, but neither are inextricably problematic.
Why are you here? What is this for?