I believe morals exist independently of Religion. And life having no sole purpose (like I believe) is invigorating. I still have morales and am a good citizen but find life even more beautiful because it all just happened from a random series of events.
Yes in a world where each is lord of their own life (Genesis 3:5), deciding what is good or evil for themselves, it is true that there is a kind of morals, but that is because in man, made in God's image, there is an innate sense somethings (that God predetermined, as you do not see this in any other species of living creature) are simply wrong. Ever wonder why they more or less mirror what He said was wrong since the beginning (murder, rape, stealing, etc.,)?
So the world of self-lords by brutality of experience, sooner or later, by consensus, agree top make some things wrong and others right, labelling whatever they choose as good or evil. The problem in that world (which I am in but so gratefully no longer of) is that if the majority in a culture accept killing all Jews is good, then it is in their thinking and feeling a good thing to be practiced and carried out even if other cultures think otherwise (all fighting, wars, divorce, and so on are the result of one or a group trying to lord it over another one or group).
Self lords, in tribalism, nationalism, religions, even in competing concepts of world domination and politics, have been ruling the world for many ages...how has that worked out? Is the world really any more civilized? No! Thats because the hearts of men in the world of self-lords is
self-ish (the word self-ish meaning the Me-man...its all about Me....sooner or later ruling the Me-man persons or groups become mean), self-gratifying, self-indulgent, self-glorifying, and so on. Even when it appears they are being concerned for the other (with the exception of immediate loved ones) it is all about themselves...they get some self boast or self stroking out of the deal. There must be some personal gain be it control, power, money, the warm fuzzies, ego gratification, personal pleasure...
There is no rational or scientifically plausible reason for man to have any "moral" sense at all if we are merely the products of chemical accidents. Dead chemicals do not think or become considerate or not considerate no matter how you mix them. The world as a whole is still very evil and full of the forces striving to destroy. Dead matter has no power to do anything. Chance likewise has no power to create anything...chance is never a cause only one of a number of possible outcomes.
Paul