I'm an atheist and I'm not angry at God. In fact I respect religions role in building civilizations. I'd imagine most angry atheists are communists and or edgy teens. With a smattering of average folks thrown in.
Also an atheist, and I have
no anger towards any deity that may or may not exist.
To simply say "all atheists are angry at God" is, frankly, hilariously stupid, arrogant, and utterly dismissive based on their own biased viewpoint that their deity
must exist.
I respect what religion has done for civilization (it pretty much founded Western civilization, after all, even if batshit insane Lefties are trying to tear it down now), and that it's a necessary evil despite the outright evils that have been committed in its name (e.g. atrocities): community, traditions, family, and bond-building towards your fellow man and all, and the moral lessons (fables) in holy books are sound -- don't be a cunt to your neighbor, don't be lazy, et cetera, they're all
good things.
Man is pretty much hardwired for religion in some shape or form, be it Xenu, the Abrahamic God, Zeus, or Sun Worship.
As for why I'm an atheist? I think it's all bullshit.
Every religion can be traced back to a prior one in some form, even the modern titans. It's like the family trees of languages and alphabets, especially Indo-European ones.
Historical examples?
Artemis was originally a native, mountain spring goddess before being adapted into the Artemis we most commonly know her as in Ancient Greek religion. She was then, in this form, promptly appropriated into the Roman pantheon as Diana. As she spread across Europe, IIRC she was further changed in local cults in the UK to something else, also being mixed with Celtic/Native and later even Norse deities.
Vulcan/Hephaestus and Odin also had this treatment, too.
Aphrodite, who became Venus in Rome, was originally Astarte, who was a mutated cult of Ishta. And let's not go into the further, utterly muddled links of Ancient Egypt's deities, Greece's, and Rome's as they culturally contacted each other more!
Modern examples?
Islam's two main sects? Mutated Abrahamic and native paganism. The various Christian sects? Primarily a Judaism offshoot, with paganism and Celtic/Norse blended in. Judaism? Yahweh was a
Canaanite deity, one of
many in an
entire pantheon, which also had muddled links to the other religions in the Fertile Crescent.
If there is an Almighty out there, he, she, or it are certainly not anything what these religions portray he, she, or it as in their own way. Hell, he/she/it might be fucking Cthulhu for all we know.
So, yeah: complete bullshit with morals and fables that are useful/needed/good to know.