Many people work hard to earn money only for it to last momentarily. This is not bad per se, especially if you have mouths to feed and mountain of bills to pay. OFWs are the best example of this. They send money to their families in the Philippines until nothing is left to save. That is why its very important that they learn how to invest because this doesnt only help them budget their earnings better, but also secure their future.
When you're abroad bitcoin helps you more since its digital currency which can be used world wide so you don't need to worry about abroad's currency you can sell it there can convert it into fiat.