"ALL" the attributes of being a religion?
A group of people don't believe something exists. That's a religion how?
If you asked me how Catholicism was a like a religion, it'd be a pretty easy answer. Catholics believe in God. They have seven sacraments. They read the Bible. They go to Church on Sundays. They get baptized, take communion, and confess their sins. There are nuns and priests and monsignors and bishops and cardinals and a pope.
You can do the same exercise for Jews, Christians, Hindus, etc. etc. etc.
You know what you can't do? List all the ways that atheism is like a religion. Because it isn't.