God is good...all the time?

I was at church Sunday, which I was happy about, however, they started out thier service by stating "God is good all the time and all the time God is good." Now I have a question about that. Can God be good? Now hear me out. God can be love, God can be a father but is God good. Even to take it a step further is God Ultimate good. (Disclaimer) Now I am not questioning God or his goodness although it may sound like it just giving anyone who reads this food for thought (end disclaimer). I mainly here am going to look at the Old Testament but then I am going to draw in some thoughts from current events. When God flooded the world, was that good? When God burnt Sodom and Gomorra, was that good? When God hardened the heart of pharaoh was that good? Now let us draw in some current events. When 9/11 happened could a ultimately good God have stopped that? Could God who is ultimate good, stop murder, homelessness, poverty, hate, etc, and etc. Now I understand that God allows us to have free will but could we still have free will and these things not happen because God is good.
I believe God is good. I believe that God's goodness lets us have free will to the end that evil things happen. Does God cause these things to happen? I do not think so. But God withstands these things to happen, and I believe that God morns when these things happen just as we morn.
God is good! God is good all the time! Praise God! Thank you Lord for your love. Thank you for the gift of your Son. Thank you for the gift of your Holy Spirit. Thank you God for your goodness.