I'm an agnostic atheist, purely due to the lack of proof either side is able to present. I don't buy the whole blind faith argument the religious sell. Nor can science explicitly state there is no god. I fall into the category of pragmatic atheism.

Also, I believe the internet has a disproportional amount of atheists. Statistics put the percent of Christians (in the US) at 77% (or about 230 Million). Abrahamic religions cover around 4 billion people worldwide (about 2/3 (or 66%) of the World population). Where atheism covers a mere 120 million people worldwide (a tiny 1/50th (or 2%) of the World population).

I'll talk specifically about Leviticus 17-26. These are the so called "Holiness Codes", often thought to predate the rest of Leviticus. They are often thought to be derived from an earlier set of legal code. Their purpose is thought to be a reference to avoid sexual deviations, sexual transmitted diseases, and other physical ailments. Other weird laws in the Bible has to do with societal norms; which seem weird to us now due to the shift in society's expectations.