I was a huge fan of Star Wars, and Disney killed my interest in it, aside from The Mandalorian.  The old EU was a disjointed mess filled with retcons and bad ideas, but it was respectful to the OT characters- Luke started a Jedi Academy (in a Sith temple, no less) and founded a new Jedi Order, Han and Leia married and stayed together despite the tragedy of their son turning to the Dark Side, and the Imperial Remnant mellowed out and eventually even formed its own corps of light-sided force users.

In the Disney sequel trilogy, all of our original heroes are jaded failures who exist to make way for the new heroes.  I understand the concept of passing the torch, but it was done in a way that was hugely disrespectful to the spirit and characters of the Original Trilogy.  I think both Finn and Rey had a lot of potential, but they blew it by giving Rey the ability to harness the Force in multiple ways without any training, and making Finn into a comic relief ex-janitor despite his interesting background as an ex-Stormtrooper who grew up in the First Order.  I suppose they succeeded at their attempt to make Captain Phasma into the new Boba Fett, but unfortunately it was in the "caped, armored character who mostly stands around and goes out like a punk" way.

And for some reason, Disney took the dumbest aspects of the old EU, like Palpatine coming back (Dark Empire), a seemingly dead Sith Lord returning and pulling an army of Sith Troopers and ships out from nowhere (Star Wars: Legacy), Han and Leia's son turning to the Dark Side and becoming a fascist enforcer (Legacy of the Force), and an Imperial Remnant possessing a superweapon that can destroy multiple planets on the other side of the galaxy (Dark Empire II), and made them even dumber and nonsensical.

[/Vent Heat]