Two or three of the comments stand out...
Besides that fact that women seem crazy today the truth is women are expensive and they want children and children are very expensive. Most jobs are low paying crap jobs and so females have priced themselves out of the market. They are un-affordable for the most part.
I.E it's basically a problem of economics...
I'd tend to view it as a problem of economics AND morals. If I picture myself at age 20 - 30 in today's world, about the only way I'd want to have anything to do with sex at all would be to marry some girl I met at church; anything else would be too dangerous and too complicated.
But a lot of the blame for this **** can be laid at the feet of greentards who have simply shut down too much of the American economy.