Then maybe you have "sexual aversion", which is a psychological problem for many reasons. It may be because they don't know about sex, lack correct sexual knowledge, have been instilled with feudal ideas since childhood, or have had tragic sexual experiences as children.
In fact, China people have been imprisoned by sex for hundreds of years, and there are many disgusting people. However, with the popularization of sex education (pray that China will not have it in recent years), it will gradually be eliminated.