I wouldn't be able to live in world A.
I wouldn't want to live in world B.

Frailty, thy name is man.
From his shorter life span and iffy sperm counts to his dubious Y chromosome and eroding social stature, the male is "wilting away," claims British geneticist and popular-science author Steve Jones.
In fact, says Jones, the male of the species -- or at least his defining chromosome -- could slide into oblivion in a mere 10 million years.
He holds to that position, he said in a phone interview, despite some promising news last month about the Y chromosome's possible resiliency.
Jones, a snail biologist and genetics professor at University College in London, explores the past, present and future of males in a provocative book, "Y: The Descent of Men" (Houghton Mifflin, 252 pages, $25). The title is a riff on Charles Darwin's 1871 "The Descent of Man."
Jones' predictions are momentous, but the tone of his book is witty and insouciant, as if he personally isn't losing sleep over what may be wrought in upcoming millions of years.