Why does nobody follow the "Don't invest more than you can afford to lose" rule?

Scroll down the various cryptocurrency feeds for a few minutes and you will see within seconds dozens of people who invested more than they can afford to lose.

Why does literally nobody follow this advice? I put $500 into crypto (mostly a bag of ULTRASAFE coin and GenWealth coin and a little bit of PORNROCKET) because $500 was all I could afford. I lost all of that money but it didn't ruin my life because I followed the advice to not invest more than I could afford to lose.

Now I have more money to invest during this dip and I am able to buy coins that will moon on short notice.