This by the way, is drivel. There's no despair, only wonder. My life is full of meaning and purpose. Your obsession with "appetites of the flesh" says more about you than it does about me. My existence may be short in comparison with the universe, but it's a lifetime full of both purpose and promise.
I really don't understand why Christians try to bolster the tawdry jam-tomorrow promises that sustain them by trying to imagine how empty must be the lives of those who don't share them. We fill our lives with the worthwhile, by wondering at the reality we live in and seeking to understand it, by nurturing our family and fellows, by defending what we hold dear and by educating our young people to protect the future. Your vision of dreary hedonism is way off the mark.