Denial isn't just a river in Egypt anymore is it?
I stated facts. The only denial present here is on your behalf.
"The reason people play single player games is because of the mentally ill who infest MMOs"
Well that's just patently false. You are aware that single player games existed long before anything multiplayer showed up? Within the last few years several Game of the Year releases were single player installments, so the interest is there and success is to be found.
That is not because people are hiding away in single player games due to sociopaths in an MMO space.