So then. Tell me how it feels to steal from Slashdot? After all that is what you are doing with ublock.
Slashdot gives me the option to turn off ads, but I have not done so. I do use adblock, but that is because slashdot is not the only site on the internet and other sites have ruined it for all.
I think it is disingenuous to call it "stealing" from someone just because you won't allow them to use your bandwidth and your time and your computation resources and install malicious code, viruses and spyware on your computer. If I lock my door, am I "stealing" from a robber?
If you consider it stealing to not display an ad, you might as well consider it stealing to not buy every product advertised at you. The site would get a lot more money if you actually bought the products. In many cases, they get NOTHING for displaying an ad, only for clicks. Sometimes, only for clicks that lead to purchases. So if you don't purchase every single thing that is advertised at you, you are stealing.