Not true at all. The history of human experience provides a wealth of data to corroborate the doctrine of original sin. Blasé Pascal shows this with remarkable insight in his Penses. Further, I would affirm that the cosmological argument, the ontological arguments, the teleological argument and the moral argument all show that reality transcends the empirical. And there is absolutely no basis in logic or reason to assume it doesn't.
I guess we’ll just have to agree to disagree.