Not sure if you've played / watched any proper 3d content with that opinion.
Not sure what you mean?
Having personally used, owned and played:
- 2D games on a computer (like Sonic)
- 3D games on a computer (like Half Life)
- Stereoscopic 3D games on computer (like using NVIDIA 3D Vision)
- Watched regular movies (like Titanic)
- Watched stereoscopic 3D movies (like Avatar)
- Used an Oculus Rift DK1 without positional tracking
- Used an Oculus Rift DK2 with positional tracking
- Used an Oculus Rift DK2 to watch "regular movies" (like Titanic) in a stereoscopic 3D movie theatre
- Used an Oculus Rift DK2 to watch stereoscopic 3D movies (like Avatar) in a stereoscopic 3D movie theatre
- Played sterescopic 3D games with an Oculus Rift (like Elite Dangerous)
- Played NON sterescopic 3D games with an Oculus Rift (like Dirt Rally)
I can tell you that CATEGORICALLY that any version of stereoscopic 3D does not compare to that of the experience/immersion of a VR device.
Just have a look at all the people that THINK Dirt Rally is "true stereoscopic 3D" (like you see with Nvidia 3D Vision, or with Real3D at the Cinema) only to later find out that it isn't.
https://forums.oculus.com/viewtopic.php?f=42&t=22689&start=80
A VR headset with positional tracking is SO convincing that, even when not rendered in stereoscopic 3D, it tricks you into thinking the world has depth.
CGrieves is right - VR is a totally different experience from stereoscopic 3D as most people know it, and even without stereoscopic 3D, it's a completely compelling and game changing experience.
Until you've tried it, knowledge does not equal understanding.
This is a great video to sum up to people about any comment you make before you've tried it: