Explaining how I came to this question would take too long, and it's not really important. Suffice it to say I was reading a thread on OrthodoxChristianity and this was a topic that was raised.
So, I put it to my readers (pokes Susanne):
Do you do what you do, religiously and otherwise (because I'm assuming that all readers are religious and therefore their faith informs their 'secular' actions), because you believe it will get you in to heaven, or because it brings glory to God?
*puts on Trans Siberian Orchestra while you think*