So let me get this straight. You hate/strongly dislike: Harry Potter, Lord of the Rings, Indiana Jones, Marvel, DC, James Bond, Bourne, probably Mission Impossible (based on the previous two), Fast & Furious (not a fan either), plus 99.9% of space-set movies which would include Alien, Star Wars, Star Trek, etc..

I am not saying there is anything wrong with that of course, but considering the list includes pretty much all of the popular non-horror franchises bar a few Earth-set science fiction films like Terminator and Predator (which I presume are ok), it just seems a tad on the extreme side!

Yep. You got it. And as far as Terminator and Predator go, I only give a shit about the films from the 20th century.

Crash (2004) - Not a terrible movie by any means but I found it to be patronizing, contrived and manipulative as fuck.
Alien Vs Predator: Requem (2007) - A complete sacrilege to the franchises.
Transformers: Revenge of the Fallen (2009) - Just so headache inducing.
The Losers (2010) - Arrogantly tries to be all Tarantino-esque. Fails horribly.
Horrible Bosses (2011) - Supposedly funny. Not for me it wasn't.
The Happening (2008) - Most. Stupid. Plot. Ever.
Indiana Jones and the Kingdom of the Crystal Skull (2008) - Like so many unnecessary fourth sequels, it does it's best to kill the franchise.
The Expendables 3 (2014) - Pathetic action considering the calibre of the cast.
Texas Chainsaw 3D (2013) - Well at least Alexandra Daddario is a sight for sore eyes.
Ocean's Twelve (2004) - Enjoyed the first movie but this was plain obnoxious.
Chaos (2005) - Not the Jason Statham one, but a horrible rip off of Last House on the Left. Bad, bad, bad.
Alien Convenant (2017) - No, I didn't need to know where the xenmorpth came from. CG aliens suck.

I've hated so many movies that so many other people love that I have begun to shy away from mention it anywhere anymore. It caused many arguments on the old boards. I don't understand how I always end up thinking so much differently than most other people.

I haven't liked any of George Romero's movies. I also hated Candyman, The People Under the Stairs, It Follows, Christine, Dead Again, Crimson Peak and We Are Still Here.

Non-horror movies I hated include 2001: A Space Odyssey, Shakespeare in Love, Titanic, The Seven Year Itch, Who's Afraid of Virginia Woolf, Pretty Woman, and Lost in Translation.

Whats funny is that anytime there is a thread of the worst or least favorite movies a lot of the examples are movies I love. I hate Rob Zombie's Halloween but oddly enough like the sequel. I pretty much hate everything form certain directors or most remakes. There are sometimes exceptions but Anything Michael Bay, Brett Ratner, McG, Stephen Sommers etc. Also a movie I absolutely loathe is Troy. I tend to hate the bad big budget movies that have every resource at their desposal to make a good movie as opposed to some terribly made low budget movie.