[Schwolop]

But my preference is _really_ to see no ads.

What you cite as "my preference" is really "what the advertising backend has deduced I'm most likely to buy" - that's certainly better for the advertising company, very likely better for whoever's receiving revenue from showing the ads (averaged over all users because yes, targeted ads do work better), but it's not actually _better_ for me. From my point of view as someone who didn't actually want to spend any money, it's worse, because I'm now more likely to spend the money.