When you start a startup, are you really thinking, "holy shit I only have 44.9 years of life left! Better make the most of it!" Your old age and death are pretty abstract concepts if you're young and healthy. I think for most of us, the thought process is more, "holy shit, I could spend the next twenty years working on shitty enterprise software in Cobol! Better work my way out now!" If you're making every decision now in the context of a death that's decades away, that's a bit sad.