I agree that most people lean to one side the most, but there's a bit of yin and yang going on. Biologically, our meat suits are capable of developing into either gender too. Men have nipples for what reason exactly? We start out as the female form. There seems to be a lot of gray area even though genetically we are programmed to develop into one or the other gender...usually. Even there there are exceptions.

Sex won't be needed, but we'll still have it for pleasure, right?

That's the hope transcendence wise. Well, no. I'm not sure about that really. There's something magical about physical touch. Maybe I'd be okay leaving it behind, but something tells me I would miss it. Change from one meat suit to another? Now that would be pretty cool.