Then explain to me how a theoretical field of science which asks us to accept certain principles as truth to make theoretical models work is different than asking for faith in God. Seriously I'm really trying to understand, don't just tell me I don't understand. Explain it to me.
We don't "accept" anything when it comes to science. Science is constantly being tested and reviewed.
http://en.wikipedia.org/wiki/Scientific_method
Once we observe something that breaks our current model for how something works, it goes back to the lab for more testing. An example is that recently they observed neutrino particles that travel faster than light, which has the potential to break a lot of what we know about physics and what not.
YOU AND I "accept" what scientists tell us because obviously not all of us can be scientists. However, within the scientific community (thousands of smart people from all over the world that have nothing to do with each other, other than their fields of expertise), they are constantly peer reviewing each other. If someone comes up with the wrong conclusion, there's thousands of people there to call them on it. Scientists have no affiliation with each other and have no agenda (as a whole) to participate in a giant conspiracy to fool the public. Bringing up the neutrino example, most scientists think there was an error in the test, so they're going to do more tests to see if they can reproduce the results.
Nothing in science is set in stone, and is always subject to change. NOTHING is accepted by faith. Observations and tests become a model to describe our universe, and this is held until something comes along and challenges it.
This is the complete antithesis of religion, specifically Christianity, which just tells you to accept the bible as being true because it says it is.
But there is no way to KNOW that it's made up.
Also, it's not about "knowing" it's made up. It's about not having a reason to believe it's real in the first place. You literally have no reason to believe any deity exists. We've pretty much ruled out Zeus and Hercules as being fairytales from an ancient era, God is just another string of fictional characters created by primitive humans to explain things they couldn't comprehend at the time (lightning=Zeus being angry, where we came from, where we go when we die, etc).
Christianity is just the most contemporary version of religion. Think about how absurd religions from 10,000 years ago seem to you. That's how people 10,000 years from now will think of your religion. And the ONLY reason you believe what you do is because life rolled a dice and you were born when you were, where you were. If you were born at a different time, or on the other side of the world you'd believe something else. Hell, if you were born to the family next door you might have been raised Hindu.
If you take some time to THINK about why you believe what you do, you'll probably eventually end up an atheist. Lots of religious people in the
Atheism vs Theism thread have been converted just by reading a bit there and then thinking about it a few months later. Just one quote or nugget that really stuck out to them and made them question..."why?".
http://www.reddit.com/r/atheism/comments/od6b3/this_is_the_quote_that_made_me_an_atheist/
Also, most atheists were brought up religious, so they often know more about religion than the religious people they're arguing against, because they've actually spent the time seriously thinking it through to arrive at a conclusion. What I'm trying to say is, many of us were like you at one point. Defending our religion and what not. But if you take the time for yourself and sit down and think about it, you'll find there's not much to defend.