@Phaedrus, I can understand why people get frustrated with the usual forms of "safe sex". There can be a lack of spontaneity while one partner puts on a condom or dental dam. Skin-on-skin contact is often sacrificed in the name of "safe sex", too. The sexual history questions may also be a little embarrassing to ask a casual acquaintance, too.
Having said all that, I still believe adolescent couples should abstain from unprotected sex until they are in stable, committed relationships. There are other ways to satisfy a partner short of intercourse. Young adults who still want to play the field should carry condoms and be willing to own up to any known sexually transmitted diseases before engaging in sexual activity.