Income and happinness
Maybe money can't buy love, but according to Nobel prize winners Angus Deaton and Daniel Kahneman, it can buy happiness– up to a point. Of course you always suspected that but may have been told, "Money and happiness have nothing to do with each other." Well, it does.
Basically their research (the long and short of it) concluded that happiness and income are related and increase together up to about $75,000. That is, all things being equal, you are generally happier with an income of $75,000 than you are with an income of $10,000.
So, we are saying that if playing BUX helps earning abilities (and this is speculation open to research), mastering BUX could help you live a happier life.