Gee all of ten people (nice round number that happens to correspond to the number of fingers and toes we have) were saved (and this is the KEY) FROM God!
there were not even ten righteous people and that is why God destroyed it. If there were ten righteous, God would have spared the entire city.
Again god the Killer NOT God the Merciful.
It is not God the killer, but God the Just. It is no differant than carring out the death sentence to some one that deserves it.
Mercy would be not killing people for living their life in a way God didn’t like
I believe you are confused about what mercy and justice are. Mercy is a person refrains from delivering what is deserved to another person. Justice is when punishment is given. A person is convicted of a murder. Mercy would be to let them walk out of the courtroom with no punishment at all. Justice would be giving them jail time or the death penalty. God told people how they should live and what the consequinces are for not doing so.