The average person is more likely to lose money day trading than gain (especially considering the time sink). It's basically boring slow gambling wrapped in the guise of The American Dream.
The average person shouldn't day trade. I buy stocks and basically hold them for years. I've picked some losers and I've picked some winners... but overall my return over the last ~5 years is 19%.
Buying stock with dividends helps even more, now you get money back to invest into more stock :-D
The American Dream is to accumulate wealth, and often involves looking for a way to get rich quick, some people think they can do it by day trading. There's a certain American stereotype of playing stocks to become wealthy.
Buying stock with dividends helps even more, now you get money back to invest into more stock :-D