That's one opinion but it is one of those things that cannot be proven or disproven. Some people simply don't understand or accept the concept of God on the same level as others. To simplify it the way that you did is erroneous as it disregards the amount of dedication, study and work that people put in towards their respective religions, regardless of what religion or God they follow. In most parts of the world people believe in some sort of higher power to explain the unexplained and guide them through life. No one knows whose religion is the "correct" one so I guess the only plausible way to find out is to die. Now whether we all go to some wonderful place called Heaven when we die I'm not sure; after all, the most beautiful places on earth that fit that description are currently pure Hell.