All the most prominent pioneers in the field of sexology uniformly agreed that premature ejaculation was their most frequently observed complaint. And, this has certainly been my professional experience as well.
It is interesting to note, by constrast, the wide diversity of the characterists of the men affected, who belong to all socioeconomic groups and come from all walks of life. Premature ejaculators can just as often be men in perfect physical health, as well as those who suffer from psychopathological disorders. Another element observed by pioneers as well as in my own practice is the wide range in the quality of the marital relations of men suffering from this dysfunction, which ranges from warm and loving to downright hostile.
So, you can see why I say this problem is so widely spread and sufferers are so far from alone! I encourage you to explore the Sexocorporal Approach, and to benefit as so many others have done.