I gotta admit, there is an element of deliberation to my sexuality.  The "born this way" mentality is easy an easy way out, but it has no scientific basis (as of today) and I really think most people, while they do have a very strong natural preference one way or the other, have learned their sexuality in some form or another. Comparatively, I prefer fit people vs hammies, because I am just attracted to them more.  It's in a similar vein, just a more specific requirement compared to gender.    I'm not trying to be a dick, just trying to provide another viewpoint.  Enjoy your upvote.