Misunderstanding

Why is it so easy for people to misunderstand whatever we do? Whenever we try to enjoy and be friendly, people will think different things about it. They will think that we are up to something. Can't they just take it as it is? Can't they just believe that we do something simply because we like to do it not because we plotting something behind it? Sometimes life can really be confusing and complicated. Even the simplest thing can be made complicated in the eyes of people. I wonder will there be a time where this things won't happen.