Everything changes and has an end. Not a comfortable thought - but everything is a foundation for what will be, so in that way it endures when it has died. I bet they thought the clavichord was the coolest technology and that nothing would ever supercede it - but thank goodness they invented the pianoforte. Yet the piano would not have existed if the clavichord had not been there before. Maybe in another 100 years, or even less, people will be amazed that we ever wasted our time trying to play this instrument called the piano, it is so 'limited'.
Live today fondly, because it is a fragile treasure that will be gone tomorrow, but experience every moment as an investment into 'eternity' - whatever you see that to be. I try to make that the motto of my life. When I became ill, I think I actually began to understand that.
Just throwing in my 2 cents in a potentially philosophical thread....