Secularism breeds equality
In debating whether religion is a cause of or an excuse for violence, moral wrongdoing and problems in the world (in a discussion on facebook), it is worth noting that:
Secularism breeds equality, because, philosophically speaking, it is hard to establish an objective fact that one group has more value than another.
Even if religion is an excuse and not a cause, it is good to rid the world of bad excuses so we can clearly work on the causes.
Short, but sweet.