Ads are everywhere, but I don't think I've ever bought something because of an ad. If anything they steer me away from their product. The amount of money, effort and bandwidth required to get all of these ads in front of my eyes only to be completely useless must be staggering.
I'm the same way. I have an essentially inverse relationship with ads - the more ads I see for something, the more convinced I become that it's not something I might want. After all, my reasoning goes, if it was actually a product worth having, they wouldn't be trying so hard to convince people to buy it.