I will never understand this anti-ereader stuff. I get attached to words, not what the words are printed on. Really the only downside that I can see is that ereaders can (and will) lose battery power at the worst possible moment.
But they are much more convenient overall, it's possible to download a book whenever you feel like it rather than wait for it to be shipped to you (or go to the store), and there's no difference between reading on the ereader screen and reading on paper.
(From the technical perspective of a writer I also want everyone to switch to ebooks because formatting/publishing ebooks is ten million times less painful than formatting/publishing physical ones)