Men are obsolete.

In the technique developed at Newcastle, stem cells with XY chromosomes (male) were developed into germline stem cells which were then prompted to complete meiosis - cell division with halving of the chromosome set. These were shown to produce fully mature, sperm called scientifically, In Vitro Derived sperm (IVD sperm).

In contrast, stem cells with XX chromosomes (female) were prompted to form early stage sperm, spermatagonia, but did not progress further. This demonstrates to researchers that the genes on a Y chromosome are essential for meiosis and for sperm maturation. . .

The IVD sperm will not and cannot be used for fertility treatment. As well as being prohibited by UK law, the research team say fertilization of human eggs and implantation of embryos would hold no scientific merit for them as they want to study the process as a model for research.

"While we can understand that some people may have concerns, this does not mean that humans can be produced 'in a dish' and we have no intention of doing this. This work is a way of investigating why some people are infertile and the reasons behind it. If we have a better understanding of what's going on it could lead to new ways of treating infertility," adds Professor Nayernia.

OK, not obsolete yet, but deprecated.

Update: Possibly relevant.

I was stunned to read this from Time Magazine:

The Centers for Disease Control and Prevention reported in May that births to unmarried women have reached an astonishing 39.7%. How much does this matter? More than words can say. There is no other single force causing as much measurable hardship and human misery in this country as the collapse of marriage. It hurts children, it reduces mothers’ financial security, and it has landed with particular devastation on those who can bear it least: the nation’s underclass.

The new equilibrium we are moving toward seems a very different world. Women free to pick a dad without needing him to stay as a long term helper probably pick sexier men. This should create more inequality in male access to women for sex and kids, and give men more free time to compete to be the few super-sexy super-dads.

Women would get to have kids fathered by sexier men, but at the expense of raising those kids with less male help. More men would be sex-failures with more free time to pursue long-shot plans to reverse their fortunes, and without wives to moderate them. How many of those plans will be peaceful?

Clearly, there are too many men, most of whom are inferior and so superfluous.