Oh, I am perfectly at peace, Pete. I merely realize that this world is nothing more than a stage, a training ground for eternity, and it's something that has to be
endured, for the most part. I am saddened, repulsed, and appalled by much that I see happening in the world, but fortunately, I know that I will not be remaining in this world forever, and when the time comes, I will not be unhappy to go. I think two passages of Scripture can neatly sum up my thoughts on the matter:
"Do not love the world or the things of the world. If anyone loves the world, the love of the Father is not in him....the world and its enticements are passing away. But whoever does the will of God remains forever." (1 John 2:15, 17)
"For to me, life is Christ, and death is gain....I long to depart this life and be with Christ, for that is far better. Yet that I remain in the flesh is more necessary for your benefit." (Philippians 1:21, 23-24).
It's not that I'm about to go leap off a cliff, or anything like that; it's simply that I realize that while we are in this world, we have to endure nasty things like sin, and disease, and pain, and hatred, and loss---and in the next world, we will have none of that; only joy, and peace, and love, and comfort, and well-being. This world is a "valley of tears", as one of our Catholic prayers puts it, and it has to be wearily slogged through until we reach our true home in the next reality.
For us, dying is to be looked forward to---it's one of the best things that can possibly happen to us, because we will no longer have to endure all the nasty things of this world, and we will spend the rest of eternity in the dazzling Presence of Jesus Christ.

Death is a friend to be welcomed, rather than an enemy to be fought.
But when that liberating death comes is God's call to make, not ours. We have to continue to labor until He makes the decision to end our lives.
I am profoundly sorry that you do not believe in an afterlife.....believing that this world is all there is is one of the most dismal thoughts I can possibly imagine.
Nevertheless, I thank you for your concern for my well-being, and I offer you my blessings for it.
