It's pointless to attempt to convince others to believe in something you "just know". You are discussing instinctive beliefs here; both sides can provide all the 'evidence' they want, but ultimately people either believe or they don't, and they can't consciously change that fact.
I don't believe in god, not because I am persuaded to by discourse, but because I am incapable of doing so. It's not a choice, so whether my atheism is beneficial to me or not is of little matter. It's not something I want to promote or dissuade others from because it's not inherently good or bad; just as faith is not inherently good or bad.
INFP 4w5 so/sp
I've dreamt in my life dreams that have stayed with me ever after, and changed my ideas;
they've gone through and through me, like wine through water, and altered the colour of my mind.
- Emily Bronte