You’re entitled to your opinion. But you should know 76% of Americans disagree with you.
http://www.usatoday.com/story/news/politics/elections/2016/09/01/paleologos-poll-johnson-stein-debates/89710228/

Please watch this short 4 minute video to get a brief intro to how the debates system is rigged and why the 15% rule is a catch-22 created by the Dems and Repubs to block real democracy.