What you describe isn’t atheism, its apatheism (ie. apathy toward the question of God and religion.)
Of course many of the things that religion does seem silly and even ridiculous, but in the end religion is largely meaningless. Its a convenient way to unify believers, but other than that it can never formulate or maintain a personal relationship with God (which is necessary for salvation.)
Further, even when the definition of faith is broadened, even atheists have faith that there is no God without any evidence to support this, an example of an argumentum e silentio fallacy.
If you wanted to exercise no or little faith, you’d be an agnostic and declare that you have no faith there is a God or there isn’t.
No it’s atheism. Lack of believing. Some atheists take that to a near religious level, believing very fervently that there is no God. But most simply don’t believe in God. There’s an important difference between active belief in a lack (which I like to call anti-theism), and merely lack of belief (actual atheism). Most atheists, having opted out of belief, then move on with their lives, it’s not a big deal one way or the other.
Agnosticism is VASTLY different than you portray. Agnosticism says there’s probably something but we haven’t figured it out yet.
The big difference shows up in the thought experiment of what happens if God knocked on your door and said “hi”, in a very literal no interpretations necessary sense. An agnostic would now have the answer and know what to worship and how. An atheist still wouldn’t worship, because he’s not a worshiping kind of guy.