Why does the foreskin become more impt as men age?

Direct Sexual Nerve stimulation and its response becomes more important for men as they age because sex hormone levels of testosterone gradually diminish and vascular circulation becomes less efficient. Robbing men of 20,000 pleasure nerves and anatomical pleasure structures like the frenar band and frenulum deprives them of much needed nerve stimulation as they age.  The loss of testosterone and vascular efficeincy can be in part compensated by direct stimulation of pleasure nerves, if these are lost to circumcision then men are deprived of this potential sexual compensation.