So, when you say that you get low quality ads, you are telling us that the bidders think you aren't worth much. Hence, you get the same ad over and over, because you are being targeted by the 'long tail' of the bidders. Also, they 'forget' you for the same reason, because you aren't worth enough to them to become a 'regular'.
It's not the bidders, it's that you wisely don't respond well to ads/recommendations on the internet.
No offense ;)