Of the two recessions you lived through, both were expected. Many people decried the tech boom. Many people thought there were warning signs pre-2008. The problem was that nobody knew the depth of the 2008 recession.
[1]https://money.cnn.com/2007/02/26/news/economy/greenspan/inde... [2]https://thinkprogress.org/alan-greenspan-warns-of-coming-rec... [3]http://www.marketoracle.co.uk/Article297.html