Usually the people who accumulate great wealth (not Trump and his fake I really owe the Russians kind of wealth) enjoy it because they are good at it. For most folks what is required to accumulate great wealth would not be all that much fun, and so it never happens for them.

Having just enough money to not have to be under constant pressure to make ends meet should be the minimum goal of everyone, for a part of happiness is to be as stress free as possible.