Absolutely it's worth it. Writers want to be read. That's why we do what we do.
But to answer your question, regarding the books, generally speaking I would get 8% to 10%, depending on the publisher. The rest of that income, or the income generated from that book, would benefit other people in my industry.
Regarding the magazine, that was a work of love. I never took a salary for that. I was very proud that I was able to pay writers and photographers and bring their work to a larger audience.
It is generally known that for every $1 invested in culture in Canada, there is a $3 return. I would argue that it's even more in smaller communities in Canada. We do make tremendous contributions to the economy, to the local tax base. If you take us out, there's a lot to be lost.