Investing in Bitcoin can be considered as a type of gambling, like the stock market is... because there's a high risk, bitcoin itself is not gambling, what you do with it can be
Bitcoin trading is the financial game while stock market is calm and it's investing. Learn and work a lot and win in the long run.
Bitcoin - you are the casino and you always win (it's investment). It's deflationary. Invest in it but only you can afford to lose. But be warned, I tell it about hodling and not trading which expectancy is -4% if you trade on pure luck.
Fiat - you are the gambler. It's inflationary. Banks are the casinos and they always wins.