I'm not a Christian, but I do believe in God. When I was six, I thought God was calling me to be a vigilante and kill people at my discretion. When I was sixteen, I thought the goddess Lilith was calling me to make a sacrifice to her, and so I did. I think it's possible for God to exist for a number of reasons, including those two times. Anyway, I like to think that suicide is pretty serious to God, as it's the destruction of your body and life on earth. If God considers that precious, he'd probably be mad at whomever decided to destroy you, including yourself. I also think that God is merciful. At the end of the day, if your are severely depressed and guided by negative thoughts, then your decision to kill yourself will be one made solely along the lines and on the blocks of negative thinking. I don't think God will hold it against you if you got there by way of mental illness and unfortunate circumstances. I do think God would like us to continue living; I'm sure it would please him to know that our only source of hope is the thought of living well for God. That's just the way I look at it.