People's minds are shrouded in layers and layers of delusion. They create their own imaginary world in their minds and superimpose it over reality, so that they can live in the world they want.
The more strongly you believe that you are the exception to this, the more likely it is that you aren't.
Rachael: A light-year is how far (distance) light travels in a year (time) so to say that it is a measure of distance and not time is incorrect--it is a measure of distance AND time. The OP's point is that in order for us to see stars millions of light-years away, the light must have been traveling towards us for millions of years in order to have reached us, meaning the universe is at least that old, rather than a few thousand years old.