but I do have an issue with death without sin in the world
Hang on, let me get this clear. Your belief is that if there were no sin in the world there would be no death ??? At all ???
Yes. This is actually a pretty fundamental Christian belief
Err, no, I don't believe so. It may be a particular fundamental tenant of a specific brand of fanatacism, but it has little to do with Christianity. God, the Bible, perhaps, but not Christ.