Well at least for me when it comes to the Star Wars sequels while of course I was always going to see them it's also kind of a double-edged sword.
For me it's like Game of Thrones vs A Song of Ice and Fire. Will I read The Winds of Winter and A Dream of Spring if and when they come out? Of course, and I don't doubt their quality, but no matter how good the experience my hype is always going to be dampened by the fact that I've seen the tv show ending first. Even if the two are vastly different, I've still seen a version told already. And I say this as someone who thinks A Storm of Swords and A Dance With Dragons are two of the greatest fantasy novels ever written.
Same thing with sequels to the OT. I got a version of the sequels about 25 years ago with Thrawn, Jedi Academy, Yuuzhan Vong etc, so really the films were never going to be this massive thing I've been aching for my whole life.