I think for most it is a passing fascination:
1) I can make easy money.
2) Look how easy it is to buy and sell.
3) I can make xxx PER DAY.
turns into
1) This is a lot of work day in and day out.
2) Buying and selling is too easy, but when to buy and sell is not so easy.
3) I can only lose XXXX per day.
It reminds me of the Weed-Marijuana business. Everyone thinks, after taking a big hit, it is easy money, but don't take into account the skills and infrastructure requirements. They just think of the things the understand: Smoking, buying and selling*.
Day trading is a business. Treat it as anything else and your business will fail within 1-2 years, usually from capital drains. You have to learn all the things you DON'T understand, not just tweak the things you do understand.
*FWIW: Can you imagine trying to cut complex business deals with people who are chronically high?