Fertility is a sign of virility
Many men feel threatened when fertility problems is threaten, this is because it is the factor that justifies their manliness. Truth is, many men refuses a simple test like semen analysis fearing that a bad result will pop their well valued ego. And in the end when they realize and understood the value of the test done this will make them agree to submit themselves to the test.
By the way, infertility and good sexual function are directly irrelevant with each other. Although, it is not very common for men who have impotence or a decreased libido problem to have issues with male fertility.
