Almost daily movie viewer in VR here since three years ago.
I actually created a thread for this over 2 years ago:
Watching Blu Ray movies on VR Headsets - your thoughts
A lot changed since its last post though!
I started with watching movies on my 4K display Sony Xperia phone in a mobile VR headset. The 4k display and its RGB striped eliminated screen door effect and it was quite a joy to watch my favourite movies on the big screen.
I then bought a PSVR headset and despite it being a step down in resolution, it's OLED screen is an RGB striped (a 3 sub pixels arrangement) so has a higher subpixel resolution than Rift/Vive. Although not as high as my 4k RGB phone, PSVR has a superior lenses than any mobile headset or Rift/Vive, making movie watching very enjoyable for me and furthermore, is the ONLY VR headset that enables me to watch my Blu ray movies directly without ripping the discs. This is my regular way of viewing. The only thing missing from my mobile VR headset is the recreation of a cinema environment which I enjoyed on the mobile vr headsets. PSVR cinema screen is in a black void but that's totally fine for me.
I also have an Oculus Go which I primarily use to watch Netflix movies...in my bedroom or in b&b/hotel rooms. It has a better screen then both PSVR and Oculus Rift (which I also own but I dont ever use for watching movies as I dont watch movies in my home office where my PC/Rift is). Oculus Go is a joy to watch Netflix content in.
The biggest revelation of watching movies in VR for me, though is 3D. I have been a hater of 3D in cinema due to 3 major issues: Low brightness, low colour dynamic range and sometimes, ghosting. (wearing 3d glasses was never an issue for me btw, only with Active Shutter 3DTVs which gave me headaches). But I enjoyed 3D on my passive Panasonic 3DTV as I have control over brightness settings to eliminate the first issue, and was far superior in comfort to my previous Sony active 3DTV.
But in VR, 3D movie watching is taken to a whole new level of enjoyment as all those prior issues are totally eliminated. No ghosting, no brightness reducing and no washing out of colour range.
VR 3D is simply magnificent.
Throw in Jurassic Park 3D blu ray and its a whole new film yet again. (btw the greatest effective 3D moment of any 3D movie for me, is when the velociraptor jumps to grap the little girls leg, I flinch every single time)
Another great reason for movie watching in the headset is if you are in the living room with family, they want to watch Strictly Dancing, then you can isolate yourself in a Last Jedi 3D Blu Ray (everyone loves that last film, right?
).
One more thing about PSVR, I always choose to watch my films in VR using my home theatre sound system, rather than using headphones as nothing beats the spatial acoustics of the home amp.
I tried movie watching in my Rift but its SDE and god rays can be a put off and I hate that I can't watch my blu rays directly.
As for watching actual 360 VR movies....not for me. I don't dig them at all. What I do enjoy is true 6dof VR movies of which there are very few. Allumette is my favourite VR short movie, highly recommended, its true 6dof VR, not flat 360.
Then there are immersive VR movies (disguised as games, ha) such as Invisible Hours (magnificent, brilliant pay off on completing every character journey), and Deracine (PSVR exclusive, beautiful and unforgettable).
By the way, I am also a regular cinemagoer (about twice a week) and for me, its a totally different experience to watch a film on an actual big screen and I will never substitute my cinema going unless circumstances prevent me as I get older. In which case VR is a great substitute, especially if you dont have the luxury space of installing a Projector. Besides VR 3D is superior to any other medium full stop and even in 2D, there are scenes that make as much impact as an IMAX experience. And supernatural horror movies are scarier because of that sense of isolation!