If current trends continue, there may well come a time when I am no longer willing to jump through the hoops that Google creates in order to sustain the pittance of an income that falls from the main table.
If that day should ever come, I'll pull my websites off the servers and make everything no index to Google's bots.
BUT… what does that really accomplish?
If Google has indexed my content for years and already have the information tucked away in their databases, does a no-index directive today require that they cease and desist from using content gathered prior to to-day?
Is a no-index retrospective or can Google happily fill the Knowledge Graph with data captured prior to the no-index?