I said two things.

1) You can have good sex without marriage.

This is obviously not true in all cultures as it is impossible to have any kind of sex outside of marriage in some.

2) You shouldn't marry for sex.

This holds true regardless of culture. It is a natural drive to want to have sex. Absent any opportunities for sexual intercourse other than marriage, some guys might rush into marriage to get sex sooner. Such a thing happens in conservative religious circles in our society, too. Regardless of culture, young and inexperienced people tend to be unwise.