As for me, I wouldn't own nearly as much Star Wars merchandise as I do now. I'd probably still own the toys that came out after the first movie (assuming they would've made any), but probably none after that. No figures, books, statues, comics, etc, etc because they simply wouldn't exist. Instead, I'd have a house full of Lord of the Rings items (I didn't read the books until just before the movies came out, but I was instantly hooked). I'd still be a huge Sci-Fi fan, but I obviously wouldn't be able to say my favorite character is Yoda (it'd be either Luke or Han in that case) and I wouldn't be a huge fan of Jedi and Jedi lore.
So other than having a lot more money (or having spent it on a different franchise), I don't think I'd be much different than I am today. Aside from my vast collection of Star Wars items, my life and career weren't as affected by the movie. I'm an IT Manager with a passion for all things computers, so that wouldn't have changed anything. My wardrobe obviously wouldn't be made up of Star Wars shirts though
