Do we want to live forever?

Death was not part of nature; it became part of nature. God did not decree death from the beginning; he prescribed it as a remedy. Human life, because of sin... began to experience teh burden of wretchedness in unremitting labour and unbearable sorrow. There had to be a limit to its evils; death had to restore what life had forfeited. Without the assistance of grace, immortality is more of a burden than a blessing."

St. Ambrose, quoted in Spe Salvi (10)