I have no problem with people having faith . Everyone is entitled to believe as and how they will. MY problem is with those who feel the need to try to convert the rest of the world to believe as they do. Those who say (and possibly even believe) that their superstition is the only true faith and you MUST convert to save your soul.
And let's face it, believing without proof opens the door to all kinds of kooks and nuts. How many times have we read about some cult committing suicide because they believed the world was ending and they were heading off to heaven without the rest of us? How does that differ from what YOU believe? (That's a generic "YOU", by the way: not pointing a finger at anyone in particular.)