Yup.  Men are becoming more superfluous than ever before.

Why do I say that?  Because of the rapid advances in the development of artificial sperm:

Scientists have raised hopes of an end to male infertility after producing mice using artificial sperm.

Artificial sperm have been used to create living animals for the first time, in an experiment that promises an end to male infertility.

Scientists have fertilised mouse eggs with sperm grown from embryonic stem (ES) cells to produce seven pups, proving that working reproductive cells can be made in the laboratory. The births provide the strongest evidence yet that it will be possible eventually to use stem cells to treat infertile men who can make no sperm of their own.

Now granted, this scientific journey is designed to treat infertile men, but who’s to say that women won’t someday walk into a Walgreen’s and order some artificial male sperm?