Science is good.
People are probably much less religious now than the ones used to be in the Middle Ages.
The 20th century was probably the most violent and bloody in history.
Anyway, you have to define what religion is.
Is it an attempt to appease supernatural forces through various rituals for purpose of obtaining material benefits? That is superstitution and that is bad.
Is it an attempt to control others for personal aggrandizement? That is bad.
Is it a recognition that there is an absolute, universally recognized set of morals and a power beyond the material to which we must account. That's good. And true.