This is a good thing. Advertising is one of the most effective ways companies have to let people know about their products - I'd say they're essential in free market economies. But having ads is one thing and completely disrupting the user experience is another. Finding a balance is a better approach than blocking all ads.
Advertising is very seldom information based. Advertising is primarily about making you buy a product from a particular company, whether it's a good product or not, whether it's right for you or not. If it were about letting people know your products then 'Nide' would have "if you want these for cross-training the best show are 'Reebob' Cross2" on the advert for their training shoes. Advertising is almost orthogonal…
That a pretty simplistic view. I never said ads are 100% true and want the best for you. Ads are informational as they inform you of the existence of a product and their basic characteristics. Small, well-targeted ads can be the only way someone that's just starting could have to let people know about the existence of their product. They don't hold a gun at you to force you to buy a product, they don't remove competition between companies, they don't prevent third-party review sites from existing. Buying or not buying them is up to each individual.