The reduction of the number of personally targeted ads that you see can be a tangible benefit, and it is something you can measure. Sure it is subjective if tha

The reduction of the number of personally targeted ads that you see can be a tangible benefit, and it is something you can measure. Sure it is subjective if that matters to you in seeing fewer personally (over-)targeted ads and if it is a quality of life improvement that you wish to have. But if you already feel that every ad targeted too specifically to yourself is a bit of a papercut, a reduction in papercuts is certainly measurable and obvious.