I don't think one can ever have enough money. It is a bit like the song"Money makes the world go round". It unfortunately is very true and we need money in order to do anything these days. The more you have the more you seem to need so the hunger is always there to have more it seems.
The human is greedy and is rarely satisfied and will do anything for more money. Today the society is all about the now and want so it will never change.