Yeah, for many years I figured "Let the website owners make money, I get to use their service for free anyway, and I can always mentally tune the ads out."
And then sometime around 2015 or 2016, I started noticing ads that would lock up my CPU, or get my laptop's fan running, or prevent the page from loading entirely, or increase page loading time by 10x. And then I decided enough was enough, and installed an adblocker.
It's not the general concept of advertising that I object to. It's when the advertising makes the content that I initially came to see unusable. Fix your goddamn Javascript and maybe I won't block you, although at this point I'm kinda enjoying the ad-free experience.