Indeed, IMO I think the idea of a God isn't logical and so I am an athiest, but no matter how hard I try it will always be "possible" that there is a God somehow, even if it is unlikely (imo)
Richard Dawkins in his book, "The God Delusion" he describes what he calls the
Spectrum of Theistic Probability which will describe a person and their beliefs toward a god.
He, and I for that matter, describes himself as a level "6.9" because he's almost certain that there is no god, however, as new evidence shows up, there's always that chance. However, in the event that evidence of a god was found and proven, it ceases to be a religion and becomes science.
You would probably fit right in that category as well. Anyone who considers them self a 7 is almost as closed minded as a level 1 theist. You have to look at it this way;
you can be certain you did the math problem right, but there's always a margin of error, be it large or small.
Also, one more thing, in a thread such as this, you don't need to label everything you say with "in my opinion". Of course it's your opinion, that's the point of the thread.