Original sin was a setup. When a child burns their hand on the stove you told them not to touch, you don’t condemn them to hell for it. Also, why did you leave the stove on and leave the kid unattended? Also, why would you punish their descendants for the sins of their parents? Also, why did you invent hell, the stove, and the temptation? “Free will” is a bullshit answer for an omniscient being who knows what’s going to happen.