I buy "licenses" to read DRM'd ebooks all the time. Even though I disagree with DRM, I still want to reward the author/editor/illustrator/translator/etc for their artistry.

As for whether I leave the books in their DRM'd state or not? No comment :)

I thought this too for a long time. But I have since raised my estimate of the harms of DRM, and lowered my estimate of how much entertainment these artifacts provide. There is enough to read now without putting up with abusive relationships.