I also allow apps and programs to send usage data.
I am joe average so I am not concerned about my activity.
And my youtube history is nothing to be ashamed of.
So did you hear about Ford monetizing driver data?
https://www.google.ca/search?q=ford+monetize+driver+data&num=50&source=lnt&tbs=qdr:m&sa=X&ved=0ahUKEwiJ8LWepOveAhUVJjQIHf2dBX4QpwUIJg&biw=1710&bih=1280
Remember, if the app is free, you're the product.