As for my license, I did have a page that stated the license, but it seems to have disappeared when I applied my new site design. I will have to fix this.

I completely agree with you that the way to ensure citation is to rely on the gentlemen’s agreement that you cite others when your published work builds upon theirs. However, when someone making a database applies a licenses that enforces attribution, they may simply want to ensure that credit is given where credit is due also when publication is not involved. I think this is quite reasonable behavior, although attribution stacking is an obvious downside.

I also use CC-BY for my blog posts. In this case I ask for attribution, which is exactly what I mean. I do not want to force people to try to put a reference to a blog post into their citations in a paper in case they want to use it as part of a publication. Any kind of attribution is fine with me.

As a small aside, I cannot find any information about which license you use on your blog. As far as I understand copyright law, that means that it defaults to “all rights reserved” – is that really your intention?