A fair question. I am an atheist because I can no more envision a universe where supernatural beings exist than I can envision a universe where addition is not commutative.
I've met a number of people who call themselves atheists, but when you get down to it, what they really don't believe in is the God of the Old and New Testaments.
Many of these folks are actually deists or pantheists, but from a Christian point of view they're going to burn with me in eternal hellfire anyway, so it's easy to see why labels get misapplied.
I can resonably utilize your explanation and say that I am a Christian because I can envision a universe where supernatural beings exist because addition is commutative.
I must say that if you are right and I am wrong then I will have lost nothing and will know nothing beyound death. However, if I am right and you are wrong, you will have lost everything and you will know it forever.
I would encourage you not to stake your eternal possibilities on the contents of some math book, but get the book of God's word on your own and challenge God to prove Himself. You like another avowed atheist, C.S. Lewis, may find yourself also "surprised by joy".