Not as i expected

am i the only one.

Male (straight) 26 years old, my question is I don’t feel anything during sex, I have heard other men saying they enjoy it a lot. I feel like I am just doing sternous exercise pushing and pulling. I am mostly successful in satisfying my partners but I do not feel any sensation on my penis. I only feel good is when I ejaculate. Is that a normal thing? The other thing If I masturbate I feel some sensation over glans penis and yes it is somewhat pleasant. Need experience men to comment. How can I enjoy as much as my partners do? thanks