@TrogJoe19: You scare me. This idea of humanity as a virus--I have heard it before. People who think this must have a deep seated inferiority complex, since why would the member of a species see itself as something malignant? We should seek ways of preserving life before we think of destroying it.
Yes, we should be prudent and think before we conceive new humans, but do we really want to go back to the days of rampant disease? Do we want to let viruses be our population control? There are more efficient, less painful ways, I think. Science is about looking forward, not backward. Seeking new solutions.
If we are becoming overpopulated, we should look to space before we think of stunting our longevity, and quashing the search for healthier humanity. With proper preparation, I wouldn't mind living on the moon. But we are so 'terracentric', especially right now, it seems.