One of the effects which quanta have to negotiate is the condition known as entropy. In all the various guises in which it appears, entropy can be said to be the arrow on which our concept of time is hinged. Entropy dictates the state of a material degrading into something else, as cowpats become slurry and hot coffees become cool. There is only one direction entropy can take, cold coffees refusing to become hot again and cowpats being unable to return to their former singular (if rather sloppy) state. Time moves forward into the future and entropy chunters along with it.
80 years isn't long to a Sun. In fact if the Sun were to be renormalised into human years it would be 62 million, 500 thousand years old by now, divide that by 80 and you get 781,250 Sun-years for every one of ours. A Sun year divided into 365 days gives you
Time and light - photons and entropy - have a powerful place in our daily existence. The more we understand the truth behind 'every day is a new dawn' and the opportunities to oscillate which we don't always appreciate (for better or worse), the easier life seems to be, for it is within our power, if not our nature, to let go of reins now and then and let the Universe have a chance to sow some seeds of its own. We have bright days, and dark days. We're never out of the equation, we form a molecule of mankind, and what we do with our minds is far more important in the great pool of evolutionary schematics than what we do with our bodies.
We are quanta, we are small, and when physicists get a head-wrap around the fact that they are what they seek to understand, we'll have a supernova target-race towards a Theory of Everything that actually means something to everybody.