What do you think you will feel better about next week, next month, even five years from now? Listening to what your gut feeling is screaming at you and behaving according to the values your parents have taught you, or putting yourself in a situation where you are open to compromising yourself just because you think that it's what everybody else does? (Not everybody does engage in casual sex or lose their virginity by a certain time - respecting yourself and others in your life is also a perfectly legitimate option).