Thank you for the textbook example of a strawman argument.
Many men who have sex, as provided through the prostitution industry, catch these STD's and take them back to their home town.
Source?
There is nothing weak or imaginary about prostitution and STD's. The use of this "strawman argument" phrase is a cop-out for the problems that really exist in the seedy world of legal prostitution.
I find your argument, that the prostitution industry in Nevada is pure and without fault, highly laughable. And I don't think there's a source of data that exists, in which men admit to catching STD's while cheating on their wife, or girlfriend. After a certain amount of time, the odds don't improve. Sort of like parachuting. Eventually, skydiving will catch up with you. LOL
The fact is, sexually transmitted diseases are at an all time high. I wonder why?