While I also think that the fact that people all over the world enjoy your softmare
should satisfy freeware developers, I completely understand why Brian makes the speed of his work dependent on the amount of donations he recieves.
Even fanmade AGI games require so much work and so much free time that few AGI adventure games get complete (and I know what I'm talking about here, hehe...

) Think about what it takes to develop a thing like SCI Studio VGA. It requires at least the same degree of professionality that the original developers and game designers from Sierra had. Maybe even more professionality, because not only does he have to analyze and understand the work of a whole bunch of programmers, on top he also has to design and write an application that lets you create complete SCI VGA games. And Brian cannot skip or ignore a single detail of the SCI engine because everybody knows what the original SCI games were like.
The point is: Sierras original developers where not only professionals because they got paid for their work, but also because they could work exclusively on SCI projects for several years.
The only reason why Brian is not earning the same amount of money as the original developers is because he was born a little too late (No offense Brian

) . Also the number of people interested in SCI adventures has slightly decreased since the days when SCI was top-of-the-pops.
So I think he's trying to say: If people expect him to be as professional as a Sierra developer, they should help him to establish such a Sierra-like enviroment e.g. enough time and enough money to work
exclusively on SCI Studio VGA. There are a lot of freelance programmers out there and in a perfect world Brian could pay his bills with his SCI Studio VGA project alone.
Cheers.
Bjoern