since I care so much about the star wars movies and the SE changes bother me more and more as time goes on, I guess I'm just more passionate about owning the original versions of those films. i like T2 and Aliens well enough, to use your example, but not owning the original cuts doesn't outrage me as much because I'm not nearly as attached to them.
plus, i can't think of another filmmaker who has undertaken the systematic and total deletion of his original works as Lucas has. releasing a director's cut on DVD is one thing--lucas' process (the SE re-release in 97, his many announcements that these are the definitive versions of the films while almost backhandedly slamming the originals, even further changes to the 2004 DVD release, few to no existing prints of the originals as seen on release) is a different animal.