I don't believe

When a religious guy tells me, "You have to believe in something," he doesn't mean truth, or facts, or evidence.
He means I have to believe in something that is beyond truth, facts, and evidence.
He means I have to have faith in a god or some kind of higher power that is unknowable.

He means I have to have blind faith.

Why do religious people believe that, "You have to believe in something?" Why can't they accept that some of us simply don't believe?
Because they lack the ability to understand what it means to not have blind faith.
They are so caught up in their belief and so unquestioning of it, that they are actually unable to imagine anyone who does not, deep down, believe in the unprovable.
They have to disbelieve so much of proven science to continue to believe in their god, that disbelieving becomes a pattern of thought.
This is why creationists and anti vaxxers reject science; to accept it would be to admit they are wrong. And they can't admit they are wrong because they need to feel in control of their lives and... there is just no polite way to say this... creationists and anti vaxxers are simply not intelligent enough to be in control of much of their own lives.
But, as Dunning Krugers will, they believe they are in control because they think they are part of the smart club who know that God is real or vaccinations cause autism. (Because science is a government conspiracy to control us all.)
They reject science because they are unable to understand science.
I do not blame them for their lack of intelligence.
I blame those who prey on them, feed them lies about religion and medicine, use them for financial gain, and purposely promote the ignorance of the population.
Religious organisations, faith healers, and snake oil salesmen like Dr. Oz are the lowest of the low.
They are parasites on the uneducated and simpler people of the world and it is up to the rest of us to protect the helpless from the parasites.

We must educate and inform. Religion does not want a scientifically informed population because they know...
education will end religious power in the world and that's bad for the religion business.

It's just a matter of time.