Thanks to all the religious freaks over the years, the world's collective view of religion has changed for the worst.  A few examples: 
Thanks to all the televangelists of the 80s and 90s who scammed people out of money and/or got caught in extramarital affairs, no televangelist, evangelist, or religious person asking for money can ever be trusted again.  Thanks, public moral failures. 

Thanks to all the pedophilic Catholic priests, no priest, single man in a leadership position, or adult in charge of children can ever be trusted again.  Thanks, pedophiles. 

Thanks to all the Islamic terrorists, no Muslim, mosque, man in a turban, or woman in a burqa can ever be trusted again.  Thanks, suicide bombers. 

Thanks to all the cults who wrongly predicted the end of the world, created some sort of ridiculous fantasy about eternal life on a comet or pre-mortal existence as aliens, or murdered or otherwise convinced its followers to kill themselves, no "unorthodox" religious group can ever be trusted again.  Thanks, delusional schizophrenics. 

Thanks to all the Christian fundamentalists who battle constantly against abortion, stem cells, evolution, gay people, and separation of church and state, all practicing Christians are mislabeled as fundamentalists.  Thanks, fundies.
I look at these examples as the reasons why people don't trust religion and look negatively at people who do.  But at the same time, I'm guilty of doing a few things that have driven people away.  Hopefully people who are truly interested in Christianity can get past all the reasons to stay away from it. #religion