Because we have spent the last 6 years watching dozens and dozens of bad actors get away with it, and never facing repercussion and we have become incredibly cynical of anyone wealthy ever facing justice.
Link to one of these past perjury situations where there were no repercussions?
https://en.wikipedia.org/wiki/James_Clapper
See:
https://jonathanturley.org/2013/07/03/perjury-by-permission-...
https://www.usatoday.com/story/opinion/2018/01/19/james-clap...
https://apnews.com/article/business-33a88feb083ea35515de3c73...
Additionally, Clapper was part of the government, testifying on something the government wanted kept quiet.