I remember reading a piece about alcoholism where it was describing an alcoholic who concluded that everyone drinks a great deal and just doesn't admit it because that was what their social circle was like. I rarely drink alcohol and have known plenty of people like me, so, no, not everyone drinks.
Most people suffer confirmation bias. We look for confirmation of what we believe to be true about a thing. It is unusual for someone to actively seek more objective data and try to determine what the actual truth is. Most of us default to trying to fit the world to our preconceived notions of it.