The internet is a loud and busy enough place as it is, even before we consider the intrusive adverts. Just like the way TV adverts are louder than the programmes, so online ads are more garish and flickery than the pages they're hosted on.
Most people claim not to notice internet ads. But then, most people claim to be immune to advertising.
There is a way to remove adverts from the sites you look at. It's very quick and foolproof. It's also free and there's no catch.
First, stop using Internet Explorer and switch to Firefox. It does everything IE does that's any good and more besides, and it's opensource so isn't made by sending all your money to Bill Gates. You can download it free here.
Secondly, install the AdBlock plugin. Alice walks you through how to do it here.
You'll notice a clearer mindset when going online. But more vividly, you'll be amazed what going on other people's computers looks like; a riot of garish consumerist propaganda, especially when they're on things like Youtube and Facebook. You'll then keep asking people if they mind you installing AdBlock on their machines. And then they'll thank you for it.