That's why your version of Christianity finds death repulsive. I don't intuitively know or think anybody is going to live forever. You do because your religion says so.
I find death repulsive because it takes our loved ones away from us. But I also realize that it can be merciful, as when someone is in excruciating pain, as my grandfather was.
If we were originally created to live forever, as you say, then you're demonstrating yet again that the God of the Bible is bumbler who can't seem to get anything right, despite repeated attempts to do so.