But why?
I don't mind seeing ads sometimes. I do realize this is where hosts and content producers get their funds. I would much rather have sites where you can pay subscriptions to allow access to not only ad-free content and additional premium content as long as the site actually has quality content that I will constantly come back for. Places like WolframAlpha and I'm told Chegg have quality content behind their fees. Also, another thing that is quite annoying is hearing the same ads over and over again. Streaming services have this issue all the time.
Unless there's a method where I can directly pay them with cash or BitCoins. I'm blocking their ads and consuming their service for free. For reasons already mentioned by others.
I'll use Nexus mods as an example (http://www.nexusmods.com/games/). When accessing their site (which I do regularly), their web service tells you that they need ads to survive and offer you a life time ad-free subscription for 2.50GBP. Of course, it only shows when it can detect you're using Ad Blocker Plus. But this is the subscription model that more clients need to use.
YouTube Red (not RedTube... made the mistake of recommending this to a client yesterday) is another similar method. Though everyone knows Google is trolling my browsing habits anyway.
Hmmmm. Thinking about it, i might throw together a chrome plugin that calculates a suggested donation based on usage to sites that have donation mechanisms.