Christians give credit to God only for the good stuff.

I almost put "Theists" in the title, but since I'm only exposed to Christians, I don't know if it occurs in other religions.

I see it or hear it every day, usually multiple times a day. When something good happens, like a missing child is found, a Christian will say, "Thank you Jesus."

Or even more annoying, "God is good all the time!" Really?! Then what about when bad things happen?

Why do Christians give thanks to God only for good things? They may thank Jesus for their bounty of delicious food, with nary a care for farm workers named Jesus and Maria who actually harvest the food under miserable conditions.

Isn't their god also responsible if the missing child is never found, or their delicious food contains deadly bacteria killing a child?