Once I had to use the internet without and ad blocker ( shiver ). It was horrible. I still have nightmares.
Joking aside. I couldn’t believe how crammed full and chaotic sites were without an ad blocker. I have no evidence to support this other than my experience but I think , for me , ad blockers are good for my mental health. Being constantly exposed to all those messages trying to exploit insecurities can’t be good for people.