I think that all of this technology and statistics about sperm count or motility that can help you find out about your child's gender or hair color is fake. It's a lottery. Sperm motility might have an impact on your ability to get pregnant, so if you don't within about 6 months, you might want to try invetro fertilization. I do not think motility has anything to do with gender.
i doubt both people and science will ever get to the point of picking out the sex of the baby before hand
"doc, i'll make myself a girl this time..."