I too care very much about the influence the church has had in the world. Let's look at the historical record shall we? Here are some examples:
Hospitals: these are a Christian invention, and originate in the specifically Christian practice of caring for the indigent, sick and hungry. The Christian practice of establishing hospitals was without precedent in the ancient world.
Universities: are another specifically Christian invention, again without precedent in the ancient world.
Individual rights: are a direct descendent of the Christian conviction that each person is uniquely loved and valuable in God's eyes. Without Christianity, the idea of the unique individual with inalienable rights could not have developed from the ideas current in the ancient world.
Universal education: could not have happened unless Christians had established schools that were free of charge for the poor. No such idea had been thought of until the Church did it.
The Welfare State: has its origins in the Christian practice of charity - unknown before Christianity- and in the importance given by Christians to caring for the poor. Again, this would not have developed as a practice from the ideas of virtue current in the ancient world.
There are more, but those will do for starters. It's all very well to talk about the damage the Church has done and I freely admit that the Church has done some terrible things (though some of the terrible things it has said to have done it hasn't see witch burning, for example). But it's also important to set that beside what is good in our world that is a direct result of the activity of the Church.