Why is that unreasonable? My news provider is usually very reliable, fast and inexpensive. Maybe once or twice a month there is some server problem and downloads are defective (or incomplete although they should be complete on the server). So why should I change the provider and spend significantly more money? I simply re-download the files that are broken and that's it. That's why it would be practical if Alt.Binz would help here by simply creating an NZB from the defective files only. Alt.Binz knows which files are affected after decoding them, so it'd save a lot of time and effort for the user if an NZB with the files to re-download would be created.
Of course, in a perfect world this should not be necessary, but the world is not perfect...
And no, I do not tolerate a broken PC, of course. But yes, I tolerate some occasional flaws of my news provider, because generally it is great! It's a pity that you don't tolerate the needs of other people...