[autoexec]

It's not just about casual sex though is it. There are many people in long term monogamous relationships with a partner who has an STD, but who don't want to catch it themselves. Vaccines and medications can allow them to have active sex lives while staying healthy and in some cases even help women go through pregnancy and childbirth while preventing the spread of an STD to the child. For these people minor side effects (and at times even more severe ones) can be entirely worthwhile.

[tcmart14]

Or perhaps maybe a future for occupational health. My wife is a nurse. Needle sticks happen. When it does, she has to get tested, full works. The hospital pays for that and the treatment. Maybe with a shot that lasts a year rather than the current 2-3 months(?), hospital staff can just opt that route then the test and treatment. Apparently the treatment is rather gnarly.