Are Humans Hard Wired for God and Religion?

In a 2009 article in Fiona Macrae said,"Religion is part of human nature and our brains are hard wired to believe in God, scientists believe." Here is a link to that article:

 http://www.dailymail.co.uk/sciencetech/article-1136482/Brains-hardwired-believe-God-imaginary-friends.html

So, if humans are hard wired for religion, why are we so disappointed with our religious institutions. Why don't we find there what we expect to find?