Well there's two groups of resistance imo. There is educated resistance, and non-educated. For example, there are people who still refuse to use e-mail under any circmustance because they feel it is impersonal (even though they know all the advantages).
I figure it's the same with ebooks. There are people who know all the advantages but stubbornly stick to exclusively paper, and then people who are just ignorant and pretend like e-reading sucks although they don't really know. Although there are definitely more of the latter currently, I'm sure there will always be more of the former