I don't see why blocking ads for the sake of blocking ads shouldn't be a good enough reason to block ads. As a user I'm not in charge of ensuring that the mark

I don't see why blocking ads for the sake of blocking ads shouldn't be a good enough reason to block ads. As a user I'm not in charge of ensuring that the market works, and I'm certainly not required to ensure that corporations make a profit. It's their duty to do so, and companies making a profit out of ads have proven repeatedly that they will seek profits however feasible. The worst thing one might be doing by blocking ads is to breach some contractual agreement, assuming that one was ever undersigned. The only reason one should refrain from blocking ads for the sake of blocking ads would be if that was illegal. But I don't know of any criminal law that punishes such a behavior, and honestly I don't think it would easy to draft one. I certainly will block ads whenever possible, which in first place means paying for the services I like (entertainment, email, productivity, news, etc.). But when paying is not an option, and too often it is not, I simply quit the service (e.g. Facebook), or block the ads when even that won't work (surfing the web).