> In my (subjective, biased, maybe incorrect,) opinion people whose code of "ethics" includes phrases like ... are dangerous

Yeah, definitely biased and incorrect opinion. Are you aware that these tenants are not just in Christianity, but also in Islam and overlap with Judaism? That alone is way over 50% of the world's population.

> their savior was crucified

Not everyone who believes in God believes that Jesus Peace be upon him was crucified.

> The amount of life lost

Compared to what? The number of lives lost due to secular and/or atheist people like Stalin, Mao, Hitler, etc. are orders of magnitude more than any religious wars combined.

> and the intellectual stagnation stemming from these religious fanatics

Which religious fanatics? Are you aware that many of the things we take for granted today stem back to discoveries made during the Islamic Golden age?