Many men have expressed that they are dissatisfied with their penis size, sexual performance, or just want to spice up their sex life in general. Likewise, many women have admitted that they are unhappy with their partner's penis size and/or their sexual performance (now don't get me wrong - this goes both ways!) Supposedly, size really does matter, as well as sexual stamina.There have been studies showing that women instinctually view men with a larger penis size as being more sexually attra.