I anticipate that preference for current gender system to be approximately the same across the sexes (and also fairly widespread).
I'd imagine it's virtually universal. Transhumanists are a tiny population, and I can't think of anyone outside that population who would even consider revising such a basic facet of human life. Those few who've been posed the question of "Should we add or remove a gender?" in earnest would assuredly respond with an incredulous stare. Maybe some feminist academics have discussed it, though.
Number of Google Results
Postgender- 1,004,100 Transhuman- 841,000
Postgenderism- 77,000 Tranhumanism- 1,340,000
Google scholar
Postgender- 1,330 Transhuman- 4,720
Postgenderism- 10 Transhumanism- 1,910
So even though people considering postgenderism are apparently a slightly smaller minority than transhumanists, it's not a completely undiscussed topic: Both topics are being discussed both in scholarly and in non-scho...
Upon reading Eliezer's possible gender dystopias ([catgirls](http://lesswrong.com/lw/xt/interpersonal_entanglement/), and [verthandi](http://lesswrong.com/lw/xu/failed_utopia_42/) and the other LW comments and posts on the subject of future gender relations, I came to a rather different conclusion than the ones I've seen espoused here. After searching around the internet a bit, I discovered that my ideas tend to fall under the general category of "postgenderism", and I am wondering what my fellow LessWrongians think of it.
This can generally be broken down to the following claims:
EDIT- Due to some really insightful comments;
I replaced men being prone to aggression as a negative, with men being prone to suicide.
I made the verbiage a little more explicit that no one would be *forced* to change, but would seek out the changes that transhumanism would have available.