For all the usual and related reasons that you list.
Also safety.
Also privacy through reduced tracking.
Also just plain curmudgeonly contrariness. Harumph!
But after doing so, I've seen an unanticipated benefit. It's a much quieter internet. I really dislike being bombarded with messages to "Buy! Anything! Just buy it!"
And you know, the internet and web were here long before advertising took hold. I acknowledge sites' right to publish whatever the hell they want, including advertising. But I don't have to listen or watch.
I could just ignore the ads, as I used to do with magazines, and I'd be fine with that, even fine with the subliminal awareness that ads inevitably bring.
But I absolutely reject the intrusiveness of what makes ads really valuable, tracking. And I will not take the risk of ad-delivered malware. And if it costs a site money or existence when I view their site but not their ads, well, good. They're fucking things up, being complicit with the dangerous nature of current ad practices.
If ads were static, served by the site and not an ad network, I'd be less resistant. And if there were something like an Underwriters certificate that a site wasn't passing on viewer data to static ad sellers, then this argument would be over for me.
Reform or die. The internet will still be here.
Good luck with your monetization.