It's not about ads making you want stuff, it's about ads setting a frame of reference for your kids. For example, ad for Barbie would may teach kids that looking beautiful is very important. Or ads for bazooka may teach that having and operating guns is fun. Or that simply collecting something is cool. It is not a secret how Disney has ruined lives of countless little girls by continually brainwashing them about being princess whose sole purpose is to look good and attract a prince. They have had massive contribution in turning off little girls from pursuing intellectual endeavors. Ads are teaching your kids what should be desirable and what is good for them.