Because when changing trains we got a pamphlet from some Latter Day Saint-type with the title AIDS and the BLOOD. In it you could read some very riveting information;

If you get AIDS, death is sure. [Compared to our otherwise eternal lives.] However, there is something at work in your body right now that is deadlier than AIDS. The Bible calls it SIN -- and it is in your blood.

Yes, we can feel it pumping in our veins and boy, do we love it!