Dutch has a wonderful culture including their language. They lead the Europe in liberalism, arts, science and openmindedness for centuries. You won't get any arguments from me there
However, learning Dutch to read a few books will violate "The Law of Dimishing Return" as we call it in engineering. I'd rather learn Chinese, Russian or Indian, make more money , retire early and revisit my models that serve me as box collection at the moment.
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For the record, I am bilingual; Turkish , English and I am also very good with math and physics which I consider the language of the nature.
English is the common language of information exchange and globalization, it is that simple.
As for publishing a narrow focused book for enthusiasts, I think publishers like Kagero / Aj Press has clearly showed the advantages of printing books in English as well as the native language. Most hobby shops carry their books in US, UK and Canada; a market 20 times or more of the size of Dutch market. The more books they sell, the more money they make and the more obscure subjects will come to print. Then we all win.
There are quite a lot motivated buyers outside Holland ready to buy their product and yet they can not provide. Therefore, it is their problem not mine. I stand by my statement with a little modification based on your feedback about Dutch desire to read in Dutch.
"unfortunately only in Dutch"