Atheism is a religion because there are thousands or millions or billions of times more evidences in the universe for the existence of God than for His non-existence
Well... That was a nice example of "black is white" kind of statements, which are frequently used for trolling. 
P.S. Don't confuse agnosticism with atheism. Unlike agnosticism, atheism is not a religion because it's not a system of beliefs.
Interesting.
But let us always remember the REAL answer to the title question. The answer is that we all have Islamic tendencies to some degree, more or less, whether or not we formally embrace Islam.