Consider that Christ did not leave us with a Bible. He left us with a Church. And, the people on whom he built his church were quite imperfect. All of humanity and their organizations are that strange combination of strengths and weaknesses. Those who follow a religion/faith and focus on the weaknesses, will surely find them--while overlooking the strengths. Ironically, those who dismiss organized faith/religion will focus on their own strengths while overlooking their own weaknesses.
Heaven is a gift. Yet it matters what is being built along the way.