Do you agree with God punishing people for their sins or do you think that violates His all-loving nature? More often than not people argue that hell is not the best look on an all-loving God. Then again, it's not just hell, there was the flood, God getting angry with the Israelites for making a God calf and worshipping it and lot more where God punished His people.
My questions to you don't agree with God punishing someone in any way are:
Did God flood faultless humans? Did God want to destroy the Israelites because they followed His every word correctly? Will people go to hell even if they're righteous? Why should God stay silent when you sin (disobey His clearly stated laws)?
Edit: My questions to you who* don't agree with God punishing someone in any way are