If the OP is still around, may I suggest the following video:
"The Superiority of Secular Morality"
It is an hour long, but well worth the time.
"The Superiority of Secular Morality"
It is an hour long, but well worth the time.
You'd believe if you just opened your heart" is a terrible argument for religion. It's basically saying, "If you bias yourself enough, you can convince yourself that this is true." If religion were true, people wouldn't need faith to believe it -- it would be supported by good evidence.