Watching ads based on our interests can be more interesting than having to be exposed to ads that are not relevant to us. At the same time, in order to show targeted advertising companies are creating a profile of all of us, and not everybody like to be profiled.
Below you can find some links that can help you opt-out to interest based advertising.
I recommend the following web page for more info about it.
How to Opt-Out of Interest-Based Advertising and Stop the Ads from Following You