Like people said it is interesting but it wouldn't work on any kind of large scale unless people develop a way to make children independent of the human body which would mean society wouldn't change anyway because if you don't need someone they are easy to ignore. And I don't think many people would want to live that well as well.
On a small scale it's possible but there are problems, like having male children what happens? I have not seen any answers to this so far and people who have had some experience of proper separatist communes seem to suggest that boys are not welcome after a certain age.
Next is if the father is present in the children's lives can you truly be separate? This goes on with how would people have children as well, through IVF maybe to my knowledge there is a shortage of sperm in this country.
Also would these communes possibly have exclusions based on class? race?, they would require wealth to set up and not all divides in society are based on sex alone. Does it also not suggest that women are all lovely to each other as well.
And would it even have effect on current society? people would just ignore as it will have no affect on them so why care. Would that make the whole thing just a pointless exercise then or is the process more for individual comfort than to incite change?
I can understand if people feel comfortable with their own gender I know of men who are uncomfortable being around women and prefer to 'hang out with the lads' so to speak. I think a semi-separatist is viable not so sure on a full one though.
I suppose like someone said earlier for some people the other sex (except for 1 or 2) really doesn't add anything to their lives. I don't think this is really a good thing but just neutral.
Sorry I am just a curious mind.