Sometimes I am aware of this, and I wonder at all the days and moments that I have passed through. When I think about people that I know that have died, I often reflect on the last time I spoke with them. Sometimes I was aware that it was our last conversation at that moment. More often, I was not. The point about the song is interesting. I can recall as a kid that a TV show was on, and then it usually wasn't on again. You either saw it, or you didn't. It seems that moments might be something that we are less aware of, because fewer things in our lives truly are. It's ironic that the specter of death can fill you with the feeling of life. It's easy to forget that we all share it.
Wow - I remember being heartbroken as a kid missing a TV show that other kids saw and were talking about the next day. When would it be on again? Maybe never. Same with Christmas specials -- you made sure you were ready to watch them! Now when we want to watch a family film there's always the hassle of gathering everyone and then some kind of delay and maybe the start time gets pushed back so that it's too close to bedtime and we will watch it a different night. When I think of how exciting it was as a kid I can't help but feel like something is lost using TV on demand.