The church has been around for years and despite the millennia of lies we are all still here and thriving and improving.
Sure, certain members of the church got carried away with their power but the church has also been a huge psychological boon to billions of people. For example, we have Christianity to thank for the concept of individual rights and sovereignty. It wasn't that long ago that individuals did not have any inherent value. Christianity is at the root of the "modern" concept of "innocent until proven guilty".