What are you, 12? Are you in that phase of development amoung youth where you form outrageous claims and instantly believe that they are true?
First of all, American life expectancy isn't 78, its 77, and it is just that, an average.
Averages such as this take into account only average lifespans, such as 70-85, add them up and divide, as I'm sure you know. (Or you should).
It does NOT take into account outliers such as exceptionally old people, or people who die exceptionally young.
Secondly, YOU will not be skiing at 60 because you smoke. My dad is 55, and still shreds. My neighbors are 66 and 64, and they would DESTROY you in anything athletic. They are in better shape than any young person I know, at that age. (They were gym teachers, but are still an excellent example of how strong humans can stay).
Another example is my dad's friend, who is 96 and skis Crystal mountain still. The mountain literally MADE him retire from ski patrolling because he got so old, but he still shreds. Excercise keeps the body alive.
Thirdly, nothing is not a blessing. It is merely bliss. No need to elaborate on this point.
Why don't you go back to your ignorant little world and hope for nothingness, and leave the skiing and clean air to us. I don't care what you do in your own house, but the clean air laws are something I can agree to, because I don't want that shit in my lungs any more than the next person. You have a pessimistic view on life, and because of it, you shall never receive the joyous fruits of a good life. I pity you.