The cold hard facts about STDs didn't impress upon me how common they are. Keeping me insulated also kept me self-righteous. Also, no one likes condoms. Accept this, get over it, and use them. There will always be people who have a hard time separating sex from love, and there will always be people who have a hard time putting the two back together.
Sex comes with baggage.
When someone says that they can just mess around and not get involved, they are usually wrong. STDs aren't just physical, they can be emotional and psychological too. I suffered some emotional degenerative diseases during my first three lovers, and you can't tell me any different. AIDS is everywhere. If you're not willing to get tested, you have no right to have sex.