I think all writers are armchair psychologists to some degree or another, and I think a character's sexuality is fascinating. It's a great way to really get at the root of their identity, because it's such a personal thing.
I was painfully shy, and I had tremendous difficulty making friends. So, lacking friends, I watched other people. Watching is something all writers must do, and it was in junior high that I learned to do it.
Every published writer, myself included, was at one time unpublished. All writers know what rejection feels like.
All writers know how important a good title is. It's the first thing readers see, along with a knock-your-socks-off cover - a seductive 'come hither' for the story within.
I mean, first, almost all writers these days teach because they don't make enough money publishing to live on, to support themselves - people like Tobias Wolff, Anne Beattie, Amy Hempel, Stuart Dybek; a lot of short story writers, for one thing.
All writers are obviously neurotic... For various reasons, writers retreat into an imaginary world because they find ordinary life rather difficult or boring or both.
All writers behave badly. All people behave badly.
All writers have their own pet commandments.
If you want to know why all writers are a little crazy read 'The Midnight Disease' by Alice W. Flaherty. She talks about the drive to write, writer's block, and the creative brain. I know what's wrong with me!