I believe that not believing in God is illogical, and here's why:
"everything that begins to exist has a cause", and that is something we can all believe, but if Atheists are right, and (as most believe) the Big Bang was the beginning of the universe, then how did the Big Bang begin, without a cause? that cause in question is what humans define as "God", and as a Catholic, we believe God is eternal, with no beginning or end, so doesn't require a cause.
Call it BS, it's still more logical than "everything came from nothing for no reason", which btw, was theorised by a Belgian priest, Georges Lemaitres, who tried to find out why four "days" passed between "let there be light." and the formation of the sun and stars. The Big Bang theory actually gives credence to God's existence, and if you think Christians are stupid because they think differently to you, you're the stupid one!