While annoyance certainly plays a role, it's not the primary reason why I block ads.

No, I block ads because they are fucking malicious and dangerous. As far as I'm concerned, an ad in this day and age is literally malware. I am not going to even try and tolerate that bullshit. Adblockers are an anti-virus measure.

Ads are malvertisements and deserve to be blocked with the fury of a thousand suns.