If I say surprising then maybe this is not the right word but I will try if possible to make things clear. They are not suffering from any issue and yet they are asking about them. Mind you, it is a good thing to ask questions if you want to get information and I don't blame them.
What they had in mind (all of them) is that they want to further improve on their sexual performances whenever they have an intercourse. In other words, they want to increase their libidos. Period!
How WikiPedia Defines Libido
"Libido refers to a person's sex drive or desire for sexual activity. The desire for sex is an aspect of a person's sexuality, but varies enormously from one person to another, and it also varies depending on circumstances at a particular time. Sex drive has usually biological, psychological, and social components. Biologically, levels of hormones such as testosterone are believed to affect sex drive; social factors, such as work and family, also have an impact; as do internal psychological factors, like personality and stress. Sex drive may be affected by medical conditions, medications, lifestyle and relationship issues. A person who has extremely frequent or a suddenly increased sex drive may be experiencing hypersexuality, but there is no measure of what is a healthy level for sex."
What Is This Telling You?
Simply, men even if they are neither suffering from ED, premature ejaculation or any other forms of male sexual performance issues, yet they want to perform better, a lot better in the bedroom every day, and whenever the situation warrants it.
You don't have to be another Albert Einstein in order to figure this out. No man would love it if he is powerless or rather incapable in an intercourse.
Surely you must have heard it before that there are hundreds if not thousands of products claiming to help you to increase your libido, increase your male sexual stamina and in general to make you the superman in the bedroom but not all these claims can be applied to all such products. A few of them work fine agreed but then a lot more of them are just there to make you lose your money while some of them even if they work give you other side effects which you don't want.
Scientists, Doctors and sex therapists however all agree on one point. If you want to increase your sexual capabilities, you don't want a prescription medication like the blue pill then herbal supplements are a lot better options in such cases.