I know some will say "it's a bubble", that's fine but why is the bubble growing and what do you think is different from the dot com bubble for example.
1. Valuation is based on hopes for future returns, not on current situation.
2. Central banks pumped trillions of dollars, euros, and so on for the last decade. The way they did it was beneficial to investors and less to consumers. So, given endless amount of money and without much of a growth, investors decided to put them wherever possible with shares being an obvious choice.
https://www.reddit.com/r/investing/comments/iz5lvq/the_stock...