the wealthiest ppl is the one who has control of his/her own time.
he/she can do whatever and whenever he/she feels like doing, be it buying into luxury items, vacation, and whatsoever.

if you are mid-range but choose a modest life that allows u to do whatever you want at any time, that's already a type of wealthiness already. as long as the wealth that you have accumulated can warrant you the freedom of time for the rest of your life without compromising your current lifestyle, you are wealthy.

rich and poor ppl has the same things in common - eat, drink, sleep, and die.
in the event of an outbreak, money is not the thing that you will look for, it's food, and water.

in short, live within your mean.