I don't have anything of that shit activated and I am far from alone with this. My GPS is maybe turned on once a year, so probably pretty inconclusive.

The problem is if the try to form conclusions from the data collected that would concern me too.

If more people were aware what data Google collects, I believe far more people would be careful with Google services.

What is true is that Android basically become a shitty OS, something open source should have prevented, but we know how that turned out.

I don't think that I miss anything with opting out of it to be honest.