This is misguided. Just like visiting a site consumes resources on their server, visiting a site consumes resources on my system, in fact, if I don't block ads it consumes even more resources. In many cases I would argue that fetching and rendering the whole flashing shebang of ad garbage some sites ship these days consumes considerably more resources than simply serving the files on a server.
Seeing billboards and print ads consume brain cycles. Walking into a store takes energy, even stealing some prepaid cards consumes calories. That they require you do some effort doesn't mean it's ethical to consume their resources without exchanging a bit more.
By your logic not looking at billboards would be unethical. Surely you can see how that makes no sense. Just because someone spent energy on something doesn't mean you have to want it in any measure.
> This is misguided. Just like visiting a site consumes resources on their server, visiting a site consumes resources on my system, in fact, if I don't block ads it consumes even more resources.