I've kind of been a purist from the very beginning. I was extremely excited when the SE's were coming out. I was really excited to see them on the big screen, and I was even more excited about new SW footage I'd never seen before making its way into the film.
I went and saw each as it came out. Saw SW more times than I can remember, when it got to the dollar theater me and my cousin went and saw it every weekend, and I went to see it with my dad several times too. It was brilliant seeing it on the big screen! The changes were a fun new addition, mixing it up a bit.
I guess my definitive moment as a purist was a few weeks after my dad went and bought the SE VHS tapes, I was the driving force behind him buying them, I thought it would be neat to have them with all the changes. But after we watching them together a couple of times I went back to my faces THX set. To me those were the real thing, the SE was just a fun alternative, I'd sowed my wild oats with them and was ready to settle back down to my faithful OT. One day my dad sat down to watch TV, hit play on the VCR, saw that The Empire Strikes Back was in there and decided to just go ahead and watch that (back in the nineties, no cable, only five channels through our massive antenna mounted on the chimney, pickings were slim for us), when he realized it wasn't the SE he asked me why I wasn't watching the new version. I shrugged and said "I just missed the real ones".
Flash forward a few years. I get my first DVD player and the one set of movies I really want on DVD are the SW trilogy. Since SW DVDs didn't exist and there was talk about the original trilogy not making it to DVD until after all the prequels are out and they could all be released together (this is pre AOTC, and back when TPM had just come out on VHS), I found some Asian VCDs for sale online and promptly bought them, anxiously waiting three long weeks for them to arrive from Hong Kong. Popped them in and... felt really disappointed they were the Special Editions. The box gave no indication of this, it just advertised it as the Star Wars trilogy (this was an official licensed version, the exact same set as the very last VHS release of Star Wars, which also omitted the fact that they were the SE's on the box), the website listing even listed the dates of each film, I figured when it said Star Wars (1977) it meant it was actually the 1977 film that I was buying. I felt cheated and a bit irritated. Combing the internet, I came to the conclusion that VCDs of the original versions didn't seem to be for sale anywhere, if they even existed.
I discovered that VCD had a very simple file structure on the disc and that I could just drag and drop the biggest video file to my PC and rename it .mpg and run it through TMPGEnc, hack it up, and reburn it to two CD-Rs. I used this to make semi-despecialized versions of both Star Wars and The Empire Strikes Back (ROTJ was a lost cause, too many major alterations that couldn't be clipped, though I did go through the effort of removing Jedi Rocks and splicing in Lapti Nek, and making a few other changes). I was really pleased with how easy it was to remove Greedo's shot and to cutout the whole Jabba scene as well as many of the other added shots.
All this about a year or two before this site even existed, and before I had any idea others felt the same way as me about the SEs (my closest of SW friends at the time seemed blissfully enthralled by the changes, by TPM, and by anything the EU could throw their way), and tha they were working on even better methods of making home made DVD versions of the films than I had the resources to make.
EDIT: "You're lucky you don't taste very good." I think that line was the seed of my lack of acceptance of the SE. It has always been one of my favorite lines, and I feel like the way Luke says it showed a lot of his affection for Artoo. Kind of like a parent scolding a little kid who just ran out into the street and almost got hit by a car, but unable to hide the love and relief in their voice. I noticed it was missing the first time I saw TESB SE in the theater, and remember mentioning it to my dad and cousin on the way out. Didn't feel right without it. One of the first changes I made to my despecialized VCD version of Empire was to splice it back in.