Is atheism a belief?

[The Valkyrie]

Of you believe in a god you're a theist.

If you don't, you're an atheist.

Seriously, this isn't rocket science.

That's your version.  We also have the atheists who have evolved and believe in God.  Of course, mystics as well, and other various atheist denominations, versions, or whatever else they may be called.  I'm guessing you have the minority edition, where you just don't believe "God" or "gods" exist.  That tends to be fashionable today

I see you belong to the "I'll just make shit up" school of theists.