So we wasted 2 years on a limited scope of an investigation.
Trump's campaign manager, deputy campaign manager, original national security advisor (the one who led chants to imprison the campaign's main political rival) and personal attorney were all charged or convicted of felonies. Additionally, Russian organizations/individuals were also charged for a multitude of crimes against America. If you have any regard for the law, if you give a single flying iota about corruption and crime, this investigation was not a waste of time.
It's amazing this has to be repeated so often but Trump's propaganda machine does a good job at making people forget. Yell and scream "WITCH HUNT" enough times and people will believe you.