All of them are Gay ?
All of WHOM are gay? The STD generation? Far from it.
The CDC website says that pervert males (who make up no more than 1% of the population) account for something like two-thirds of the nations syphilis cases.
Not all, just a hugely disproportionate number. The chart below, based on CDC data, shows cases of syphilis:
Also see: http://www.cdc.gov/nchhstp/newsroom/docs/factsheets/std-trends-508.pdf