Buddha said be. I like the idea but it ain't easy sometimes. He also said everything is impermanent, nothing lasts forever, and every moment everything passes away and is reborn. The last one is hard to grab on to.
I live with the thought of my mortality and how few years I have (or days/hours/seconds?) every moment of every day. It rather pisses me off, actually. I "believed in god" too **** long. I "trusted" too **** much. I was a zealot and zealoted myself into a deep ******* hole. So yeah, I think that way. But there are only two choices: live, or not. Choosing not is mostly a chickenshit way to "escape." I'm not a coward so, it's just live. I have no hope for this country, for society, or the earth itself. Even so, who knows what I might learn, discover or accomplish if I hang on long enough. So, I live in spite of my shortness of days. What choice is there?