Suspicious of quiet people

I don't know what it is but I, like so many other people, am uncomfortable around quiet people. I am not talking about people who are shy, I am talking about people who just don't like to talk. Maybe it is because it is hard to gage these peoples moods to tell if they are happy or sad. Maybe it is because it is hard to know if they are just snobs and don't deem us worthy to talk to, or if they are using all their energy to suppress the demons in their mind from keeping them from perpetrating some horrific act, so talking would detract from their noble and most necessary mission. Even for those who don't out right give us the creeps, it is almost like they are hiding something. And futhermore, they don't even have the courtesy to fake interest in our conversations or anything that is going on in our lives. How dare them!!! Now I am sure that the vast majority of non-talkers are nice people but they have to let me know it, by some other means than mental telepathy.