Re: No guilt at all
None here.
Maybe if they showed ads that didn't blink, use up half my processor, and, crucially, offer me something I was actually interested in, I might consider unblocking them. As it is, ads are firstly, a nuisance and secondly. a conduit for malware, so they remain blocked.
The worst sites, BTW, are the news sites (present company excepted), and the worst among those are the local TV stations.