We don’t know why suffering has to be part of our lives. At least we know that in our suffering, it is not that God doesn’t love or care. God is so committed to our future and our joy that He came to earth to take our sin and suffering to the cross redeeming us from it all.
Job is like us when bad things happen, he can’t get his head around it. He doesn’t understand the purpose in the pain. Job asks “Why?”. He complains a bit, argues a bit to God. Yet, God is OK with all the questions and complaints as Job is working them out before God. All is done within the relationship Job and God has.