On Mother Theresa

"When even the doubts of experts are thought to confirm a doctrine, what could possibly disconfirm it?" Sam Harris

What makes good people do evil things?

"Religion is an insult to human dignity. Without it you would have good people doing good things and evil people doing evil things. But for good people to do evil things, that takes religion." Steven Weinberg

 

Arguably, religion also makes evil people do good things, negating the harm done by good people doing evil things. In conclusion, religion is useless.