You ought not to stereotype atheists (or anyone, for that matter). Many atheists believe that "Christians are Christians because they can't open their mind", but being close-minded or thoughtless is not a result of religion, and it certainly isn't true of any group necessarily. Furthermore, it is foolish to argue that any group is "critical". Even within this thread, it's easy to find Christians being critical. The reason that you see more atheists in this forum "being critical" is because they disagree with more posts than you do. That belief you hold is a result of
confirmation bias.