Easier sayd than done, eh? Go to Breitbart. Go to Realclear? Go to ConservativeTreeHouse? Lots of youtube embedded vids. I agree with your sentiment, but the world is as it is for now.
Avoiding YouTube is wholly impractical and frankly absurd.
If people want to hurt them in the pocket, then get ad block plus and block any ads on YouTube videos, or if you see an ad, write the company and tell them that you saw their ad on the site, and will not do business with them.
For ever one person that swears to never use the site, 30 thousand kids will still be there to make up the difference. YouTube is far more than political videos.