Why do we wait until death to celebrate life?

As I was thinking about the message I was trying to convey with my art, terms that kept coming up were something like “life celebration”, or “celebrating life”. So I did the natural thing, plugged these terms into Google and see what the world had to say. The vast majority of the top hits that came back had to do with funerals, funeral services and similar. Of course we should honor and celebrate life when somebody passes. But we don't have to wait until death to celebrate life.