even though im cathloc, you have a point there, but you rounded up. Besides, there are hundreds of religions. there is no way of knowing whats really true and what isn't. you believe in what your raised with usually.
if your a buddhist, you follow the teachings of Buddha, whom may I remind you was a real man, and was a wise man. making that religion mostly true besides the gods part, which is unsure of.
if your jewish or christian, if you look into the old testament of the bible, it talks about moses, the story of a jew who free'd his people from egyptian rule, and this story is mentioned both in the bible, and egyptian storys. proving that the fleeing of moses and his people was true. HOW EVER, the plagues moses made with his staff and the help of god can be disproven, with a lucky weather condition. the first plague made a chain reaction leading to the others. so its also uncertain weather or not weather or god " Yahweh " was responsible.
you can't disprove or prove a religion, so you need 1 thing, FAITH. Faith can be called trust, believe, etc. Come on, if there really is nothing, which I don't believe, wouldn't it be best to believe in something?