Lunacy
There are moments when I browse the Intertubes without an adblocker. Last time was when I had received a new work laptop and I was trying to just be productive on it (not browse dodgy sites, promise!).
Took me about a week before I broke down and went the full NoScript, uBlock Origin route on that system as well. That dodgy sites have horrific ads (hello, ThePiratebay!) is a given, but for software & hardware dev-related sites to be also affected by the same ad-network-induced plague made this easy.
Add to the visual cancer and blood pressure issues the fact that ad-networks (via JS) are also the primary attack vector for malware and kin, and ad-networks should be paying me to vet the safety of their ads, since they are seemingly both too disinterested and too incompetent to do so themselves.