A life in time is a paltry substitute for eternal life, but at least we know we are alive, and in time, whereas we don't know much if anything about eternal life. On rare occasions, however, some of us catch a glimpse of something that seems to fits the description. These occasional glimpses fuel a faith that makes life in time a game worth the candle.
Those who claim to know what they can only believe do a disservice to both knowledge and faith.