How often do you feel like nothing matters in the very long run?
The longer into the future you think about, the less anything starts to matter.
Everyone probably has this thought once in a while.
I think, no matter whether you have everything in life or nothing, no one can escape it. You might be happy now, but you'll always have the fear of losing it all some day.
The sadness of losing after you got something is also painful. Rich people are probably more afraid to die.
But in the end, I feel no matter where we are in life, we have to use everyday to keep going.

I feel what should matter is what you end up giving meaning. Once you understand what matters to you, you should try to achieve that