Uh, no, I'm not. I'm saying that as a matter of fact a lot of our beliefs are unjustified. And it has nothing to do with lazy. I spend a lot of my time trying to gain knowledge (justified true belief) about politics and political behavior. It doesn't bug me particularly that my beliefs in the realms of physics, biology, or chemistry, not to mention automotive mechanics, are unjustified. Nor should it.
The question is, what justifies belief? And, if you applied that level of justification that causes you to reject as unjustified a belief in God or gods, would the founding principles of natural law survive? Could you consistently reject as unjustified the belief in God or gods while maintaining a belief in natural rights and natural law as the Founders of this country understood those two concepts? How?