I believe you are incorrect. Christians believe that they choose to come to God via Jesus. I never hear Christians refer to themselves as the chosen people. Your question did not make sense.Doreen. Christians believe that god has chosen them for salvation. But you don't have to answer my question if you don't want to.
You did not respond to my point about God creating humans and you assumption that this choice must have come from dissatisfaction. I can see no reason to assume this. It is not a common Christian theological position. Do you have some access to God's emotional state before creation?