There are some who endorse extreme smoking, drinking and other forms of physical pleasures as living each day to it’s fullest. They claim that each one of us has to die one day, as it is, so why not enjoy life while we can.
To them perhaps the definition of being alive is associated with the fact that they are still breathing.
I dread to think of a day when I am considered alive just because I am breathing. If all I am contributing to this planet, is a little bit more carbon dioxide, I would rather be declared dead. If nothing, I would have at least saved some air pollution.