A friend of mine convinced be that faith in no God is as much faith, as faith in God.
Atheism/Secular Humanism is a faith, therefore a religion:
https://dockets.justia.com/docket/oregon/ordce/3:2014cv00565/116583
http://docs.justia.com/cases/federal/district-courts/oregon/ordce/3:2014cv00565/116583/33
James J. Kaufman, Plaintiff-appellant, v. Gary R. Mccaughtry, et al., Defendants-appellees, 419 F.3d 678 (7th Cir. 2005)