I tend to value beliefs based on faith less than beliefs based on evidence as far as incorporating them into my own belief system. In my experience, beliefs I've formed on faith in the past have been more prone to failure as far as understanding reality goes.
For example, when I was a teenager, there was one experience where I felt an evil presence looking in at me through a window when I was staying at my brother's place. It was too dark to see out that window, but my thoughts immediately went to this being an evil demon. I began praying to god and trying to cast out that demon from my presence, and after a time, I felt that evil being leave and wander off.
I found out a few years back that this "demon" was actually a known meth head who was known for looking into peoples homes to see if they were there before he'd try to break in and steal their stuff. He was arrested after he broke into my brother's neighbor's home that night, turns out.
There was a lot of fear in my beliefs about the supernatural, though, and I believed demons were an active part of existence and could possess objects. I threw away a lot of my stuff (like Magic the Gathering cards) because I thought that demons were using them to manipulate my life in a negative way.
Since giving up the belief in demons, my life has stopped being a fearful existence. It's weird to look back at the person I used to be and see just how different he was to me now... Now that I think about it, cutting out faith has done a lot to help me out on a personal level. I don't really see a reason to go back to that.
As for the faith of others, I don't mind as long as they don't try to influence others because of their faith. Worshipping one's god in private is one thing, but picketing a soldier's funeral like what the folks at the Westboro Baptist Church do is especially despicable. That's my take, at least!
Sorry to be so negative about it. I guess faith just hasn't left much of a positive impact in my life!