I'm sorry but it isn't that black and white. To be honest, I wish there was a way to put in my HTTP request headers the fact that I'm going to use an ad blocker - then your server has enough knowledge what to serve me exactly - if you wish, the text without adds, if not, then a notice saying that the text if for pay.

That'd be perfectly fine. Many sites already do this - detect my adblocker in javascript and then deny me access to the content. This is also perfectly fine - I fully agree that circumventing this forcefully is immoral/unethical.

In essence - the seller (content provider) should have the option to not give me content if I have an ad-blocker. If this is possible, then I don't see anything immoral about me using an adblocker. Do you?

And in fact, it does seem to be possible - wired for example does this. And I certainly don't try to circumvent this.

Many sites manage to work around and still show me ads. I dearly wish there would be some way for me to indicate "I'd rather be denied access to the content than be shown ads." Unfortunately that doesn't technologically exist easily yet.