I don't mind tracking for about 99.9% of what I do (and the rest I use incognito) but that doesn't give better ads - I unblock Facebook just to laugh at how incredibly badly targeted their ads are. They know more about me than I do, yet they can understand that I am not interested in dating sites, cheap scams or various "brands" not to mention free-to-pay games. At one point I even saw ads for the exact degree I hold from the exact university I already told Facebook I graduated from - is that a well targeted ad?

Sturgeons law applies to products too, but because the market is now international only the best products are worth buying so most ads are either for crap, trying to get you to buy products that aren't the best bargain or brand awareness ads which can't be made to be worth seeing.

If you want better targeting why is there no place where I can select the kind of things I am interested in? Why can't I take an ad and say I have no interest in that kind of product (In online dating the only thing that matters is traffic, so I would never go to a pay site)? It is valuable information to you, allows better targeting and a better chance I will buy the product.

Why is it that when I search for "apartment in <city>" I get 3 months of ads for the same apartment listing site, rather than for sites that will mail me curtains, which would be something I wanted?

Make ads worth watching and I will, but this is a 3-way road now - you are going to have to make the ads worth it for both the publisher, the client and the user because as a user I now have options if you don't.