" 'The question of, 'Why sex?' is a very central one to biology,' says David Mark Welch of the Marine Biological Laboratory in Woods Hole, Mass."
And of course have the geneology-science found out that the asexuality isn't the deadend that was believed during the years.
The question is how the variation of genes fostered by sex. A flexibility of the genetic pattern in a population have been seen as only possible through breeding.
"an entire class of organisms, containing 360 species, seems to have evolved perfectly well without sex. This group of tiny water creatures, called bdelloid rotifers, is thriving in fresh water and soggy land worldwide despite, seemingly, no sex for at least 40 million years."
One shouldn't be sad when not getting some in a couple of weeks. (Science News Online)