I don't understand it all by any means Lighter but I think the "being forced to choose" is part of being given free will. Personally, I don't know about you but personally, I'd rather have free will that (I suppose) be some form of robot.

As for the punishment, while I believe it is for real, I do not understand the severity. That said, according to my belief, there is forgiveness and one can escape through Christ.

For the next part, I would suggest it's Satan (coupled with man's stupidity - OK, I don't know why we are so good at stupidity...) that leads us astray. Eve was persuaded by the serpent but again I realise one could ask why inflict Satan and his minions on us...

Why select Quarn or Bible or atheism for that matter. I think you gave it with personal belief and (attempts at) reasoning leading to our choice.

Anyway, I'm sure that's not complete, etc. but it's the best shot I can give at the moment.