Basically, is it your opinion that religion is destructive or not?

As some recent threads have shown, religion is greatly shaping American politics.

Of course, this is nothing new and religion has been the cause of much good and evil. Crusades, Jihad, persecution, uniting countries, passing on morals and ethics where none existed prior, etc. Good and bad.

So is religion itself a destructive or positive force? Or is it only destructive when it is politically motivated or force upon others?