I think you are underestimating how big the prequel movies are for the 20 something generation. My nephew and his friends feel about the prequels very much the way I did about the originals when I was their age. Interestingly however my enthusiasm for Star Wars has dimmed a good deal, not unlike...
That has generally been my experience with teenagers and 20 somethings, They think the original films are okay, but to them the prequels ARE Star Wars. Doug