Unfortunately we have not become more sexually aware. People have sex at a younger age and with more partners but the sex is not better and more fulfilling. Actually it is quite the opposite. Sex becomes impersonal, riskier and mundane. A person decides to have sex for the first time for many different reasons.
Curiosity is one of the most common.
For girls first sex is usually not that great. Sex will improve, however, with a loving, devoted partner. Safer sex basically is the reduction in risk of sexually transmitted diseases by the use of condoms. Condom use can make sex more fun if you use your imagination.