I have a Kindle, so many of the books I buy have DRM. For as long as it takes to clean them, which is a few seconds.

I would certainly prefer that they not have DRM, but I don't make a big deal about it, I just remove it. I buy books (or borrow from local library) based on the author and the quality of the book, not the DRM or not. But I also make sure that what I buy, I can use any where, any time.