Sorry for the late reply, I didn't think to check back on this :)
A couple reasons:
Back when I did use them, I got really bothered by sites breaking, and I'd rather have the ads than dealing with "is this broken because of my ad blocker or is the site broken". Now, I've just gotten to the point where I don't really mind.
The other part is there's enough content I consume that is supported by ads that I would like to continue supporting, without having to consciously opt into it (e.g. news sites; I don't want to pay a subscription for every newspaper but am happy to contribute to what little money they get from ads)
A couple reasons:
Back when I did use them, I got really bothered by sites breaking, and I'd rather have the ads than dealing with "is this broken because of my ad blocker or is the site broken". Now, I've just gotten to the point where I don't really mind.
The other part is there's enough content I consume that is supported by ads that I would like to continue supporting, without having to consciously opt into it (e.g. news sites; I don't want to pay a subscription for every newspaper but am happy to contribute to what little money they get from ads)