I like podcast ads. Even for products and services that I don't care for, I find many of the products and business ideas interesting.
I also like the ads in my podcast player - Overcast - the ads are usually for other podcasts in the same category of podcasts that I'm listening to.
I don't like most ads in games and mobile apps. They are poorly targeted, intrusive, and take up too much screen real estate. I'll uninstall an ad based app that doesn't give you the option of doing an in app purchase to remove the ads.
If an app isn't worth the $2 - $3 to remove the ads, it's probably a useless app to me anyway and gets deleted relatively quickly.
Edit: Who’s down voting this and why?