Before Adam & Eve's disobedience, there was no sin & life was good as God intended. When they ate the forbidden fruit, sin entered the world so God had to send Jesus to cover the cost of sin on the cross. I want to think this world would be sin-free, but I can't.
The reason is humans are hardheaded; we do what we want (good or bad). Someone else would've disobeyed God & God would have had to send his son Jesus to the cross for our sin. In short, sin would've entered through someone else's disobedience if not Adam & Eve. #thinkingoutloud