This is the reason why people get horny at celebrity sex scenes in movies, while the subtle sexual innuendos drive us crazy for the fact that we are being teased. Graphic and hardcore porn can be gross and visually disgusting for a lot of people, and sometimes the implication of sex is enough for one to jerk off.
If you are one of these people you do not have to be embarrassed for having a mild fetish. Some people do not enjoy hardcore, graphic, and messy sex.