I think it is deeper than this, Adam ate from a fruit tree and needed christ to die
He would not have had to die for a few reasons.
1. He did not love us so much, and he made us all perfect and if we sinned, so be it, the ones who lived a perfect life would get to heaven (we would all have to be born as Adam was created, perfect. with the ability to not sin, the the ability to sin)
2. we could be sinless.. which means we NEVER work out of the flesh (for self gain) EVER. (whether God loved us or not)