Is God not going to kill Satan and the demons and most of mankind in the end? Would it not have been more humane to just have done away with Adam and Eve in the beginning?
If it would have just happened again, then what's to prevent it from happening in the future? I realize that Adam and Eve were perfect, but isn't everyone going to be perfect eventually in the paradise? So, if they sin, what will happen? Oh, I remember, God will destroy them on the spot.
Anyone that thinks pain and suffering for thousands of years is nothing, isn't the one doing the suffering.