Also remember that there are different phases of reality. We have physical reality, ie we can see, touch, feel, smell, etc... We have mental reality, a persons perception of reality is dependent on a persons ability and/or inability to think. And there is also metaphysical reality, which is something derived from emotion and feeling (cannot be proven). Our mental perception of the world, along with our physical surroundings and our spiritual opinions can all change reality for each individual. Which is why the answer to the question will never be solved. I, for example, will not believe in something until it has been proven, others may find it quite easy to believe in things they cannot see. Reality is relative.