"HIV is 100 percent preventable"   Yes it is.  

"While CDC estimates that four percent of men in the United States are MSM (gay), the rate of new HIV diagnoses among them is more than 44 times that of other men."

Overall, gay males – including those who also reported injecting drugs as a risk behavior – account for:
• 61 percent (estimated 753,800 persons in 2013) of the estimated 1.2 million people living with HIV in the United States.
• Approximately two-thirds of all new HIV infections each year.

https://www.cdc.gov/nchhstp/newsroom/docs/factsheets/cdc-msm-508.pdf

The gay lifechoice needs to be shamed in the same manner as cigarette smokers for their irresponsible behavior that affects the rest of us.