We both agree that there are risks from both contacts with animal and contacts with other humans. What I am trying to tell you is that the risk for contracting a killer disease from another person is more likely than contracting a killer disease from an animal since there are already a myriad of pathogens already adapted to human species. On the other hand, getting some form of mutated animal adapted pathogen that now could cross into the human species is a much less likely scenario.
How could this possibly be an educated statement, as a pathogen adapted to human species is still ADAPTED? Therefore, any pathogen could end up being adapted to the human species. So if a pathogen is adapted from a separate species to fit the human species, you have then cancelled your argument out. Every illness starts somewhere, and I wouldn't say somewhere is within the human species.