I've never actually had any trust in god. When I was a kid, my family wasn't religious so I didn't know much about god. Just minor things like he made the Earth, the people, and everything, and that he could do anything. Then when I was 4 or 5 one of my aunts thought my cousin, who was a year older, and I should start going to church. Now, at the time one of my favorite movies was Disney's Hercules, which is important because it actually got me into Greek Mythology as a kid (And yes, that is a pretty messed up thing to be into as a kid). Anyway, I went to church and they gave their whole, "There's only one god and to believe otherwise is heresy." So as a child I said, "What about Zeus, Hera, and all the other Greek gods?" The pastor said, "Those were just stories written a long time ago to explain how the world worked to the Greek people." In which I replied, "But wasn't the bible also written a long time ago to explain how the world worked?" He was livid, but you have to remember I was only 4 or 5 at the time so he couldn't actually do anything to me. A few weeks later, and after a few more talks about how Greek gods were no different than the Christian god, my aunt told me I no longer had to go to church and as I child I thought that was awesome because it was boring. Though, making arts and crafts was fun, but it didn't happen often. Now that I'm older, I'm pretty sure I got kicked out of that church. Just for the record, I didn't believe that Greek Mythology was real either.
As I got older, god became less and less there. Sometimes I forgot people talk about god because I don't pay attention and my friends aren't really that religious either, even though one of them goes to a Christian school. They just have a really good art program. It's mostly that I haven't seen evidence of a god. If god loved us as the bible claimed people in Africa wouldn't be suffering. In fact, the world would be in harmony. If anything, the thought of a god is what disrupted the harmony because back then you had so many people believing so many different things that if you had a different faith, most of the times someone else would kill you. That aside, I really wouldn't call myself an atheist, even though it might come off that way. I'm more agnostic because I don't really care if there is a god or not. I believe that if there is a god, and he's as loving as people say, then as long as you were a good person, he'll still let you into heaven even if you didn't believe in him.
tl;dr: I've never had faith in god because there hasn't been anything to prove that he exists.