...ummm, you might want to check your "official numbers". In the US (with a population of just over 300 million), over 19 million people become infected with an STD every year (or over 5% of the population), and over 65 million have an STD (over 20% of the population).* Not exactly consistent with the (unsubstantiated) "less than 1/1000 for healthy people" odds you are tossing around....
Feel free to think that you are "different" and/or "bullet proof", or that the perseverence of the species is somehow evidence that you won't get rotten crotch from stupid and careless behaviour. But, if you would be so kind, keep your nasty, uninformed backside away from me and the girls I like.... *shudders*
Happy thumping (somewhere else)!
* feel free to share the source of your "statistics"... mine are consistent with those provided by the American Social Health Association