I think sex is meant to be enjoyed by two people who have serious feeling for each other. Sex is good, it is there for two lovers to enjoy themselves and share the secrets of their hearts.
On whether one should engage in premarital sex or not, I would say, yes. Premarital sex is okay as long as it is a safe sex. Our society allows it. These days, you can hardly keep a relationship going without sex.Who agrees with this statement? If you decide to zip up, you can't keep a relationship?