Timing the market is far harder to predict than it will crash. As you said in 1997.

In 1997 the Nasdaq was about 1700. In hindsight sure, sit on cash and buy at 1200 in 2002.

In reality you'd have either bought around the 1900 mark in 2001, or perhaps waited until 2003 when it was back to 1900.

Then come 2009 you'd be back down to 1300, so would you have waited 12 years?

You are

1) betting the bubble continue until the bottom is even higher than today

2) betting that AI won't be bailed out by the most honest administration ever seen

3) betting that you can accurately time the bottom of the market

Good luck catching your falling knife