I do know lots of people who call themselves 'athiests' are usually doing it wrong.
When I was in highschool there was an 'athiest' group who wore upside down crosses, and cussed God and Jesus left, right, sideways and upside down.
I really pissed them off when I told them the upside down cross means something other than 'anti-christ' [Hint: It's submission to Christ saying you are less than he is. Which is also known as "The Cross of St. Peter"]
But back to being on topic. I used to be a relgious person. But due to fall out from like 3 churches I no longer follow really anything. I'm not athiest, I belive in a God, I just don't want to deal with his Tom Foolery right now.
Just make sure if you're going to call yourself something you call yourself the right thing.
Either it be, agnostic, gnostic, or athiest or just anti-christanity. Because we all know, when you're saying you're either one of those, you're just wanting to bash Christianity, not Hinduism, Buddahism, Muslim, or Jewdism. (as for my experince dealing with them, they will bash god and jesus, but muhammad is a 'terror' subject)