You must be wondering, why most of the liquids are
alkaline?
Well, most fluids constituting the semen are alkaline to neutralise or counter the acidity of the urethra or the vagina. Alkaline environment is helpful for sperm survival and mobility. Acidic medium kills the sperm cells.
How long does a sperm take to grow up?
A sperm cell {from it's immature form inside the seminiferous tubules (testes) to the mature stage in the Vas Deferens, where it cues up for ejaculation} takes 2.5 months or 74 days to mature.
So, its
costly stuff, man!