I see vary few advertisements and as a result I don't buy much stuff. Sure, I have missed out on say video games I would have enjoyed playing, but at the same time it's also removed a lot of disappointment and stress from my life. Generally, when I walk into a store brands mean nothing to me so I make some random choice and then decide to either stick with it or try something new. And honestly most big brands are good enough that there is not much difference between them so avoiding the cognative overhead of playing all those advertizing jingles as I get groceries is a great thing.
I also tend to buy brands that spend less on advertizing because they end up as a better deal for your money.