That is a very Godly post! And it got me thinking, so I did some quick research.
Not only are there no "good" STDs, but there are no good viruses of ANY kind. That's incredible when you think about it. There are good bacteria, good fungi, and of course good plants and animals. But no beneficial viruses.
I don't see how evolutionists can spin that. Because like your example of a good STD, any good generic virus would have a huge "evolutionary" advantage too, and would be extreme wide spread. In fact scientists are trying very hard right now to create a "beneficial" virus in the lab (of course I've read enough novels to know how THAT will turn out).
Looks like evolutionists have some explaining to do