@Cult: There is really no school of thought which claims the Judeo-Christian God is "all good." The same bible that speaks of God as benign and forgiving also says that he is wrathful, jealous, vengeful and will punish people. This would make sense, then, as God is everything. If God is everything, that is also all "bad" things.
For myself, I don't subscribe to any religion at all. Religion was created by people. Spirituality is different and I am spiritual. I believe in a few different philosophies. Most would probably say they contradict each other but that's only if you are dogmatic or closed-minded.
To me, the inability to accept or even consider that there could be things beyond what we can see or hear or touch or believe is an example of being both dogmatic AND closed-minded. There are a lot of people like that in the world. I don't make it my mission to change their minds. If they want to talk or debate about it, I am always game for that but spirituality is such a deeply personal thing that is has to come from inside of them. What I don't like is people who feel the need to mock, ridicule or otherwise judge other people's religious or spiritual beliefs (or lack thereof). Put quite simply, what business is it of theirs? Or mine, for that matter? None.
So to answer your last question, I generally don't challenge people's faith for two reasons: One, it is none of my business or concern (I really don't care what other people believe; it makes absolutely no difference to me at all) and two, because life does enough of that on a daily basis to everybody.