team_negative1 said:

Projectors are the way to go. But if you don't have the room, widescreen monitors only take up a little more space than standard monitors, but have a huge impact on the viewing experience.

Team Negative1

I'm with you up to a point. 21:9 displays are definitely aimed at being a low-end (in terms of both cost and space) alternative to projectors, but...

21:9 is 2.33:1. Depending on your source's "scope" ratio, you're still not using your display's full height, albeit pretty close. Or, if you're watching Ben-Hur, it's still not really even that close.

Home video encoding is still 16:9. This presents a lot of issues that are nothing new to projector owners (manual AR selection, movies that change aspect ratios, fun with subtitles), but with displays you've also got scaling and pixel mapping issues that may reduce image quality. But going back to the "nothing new to projector owners" issues for a second though, all of these are very much new to owners of typical displays and aren't that much fun. The Netflix app in a Smart TV typically disables most TV controls--would it even allow you to select the AR for a scope film? Who knows?

If you watch in the dark, the invisible edges of the display and the invisible black bars blend in with the rest of your invisible surroundings. All you get out of a 21:9 display is a bigger picture, which you could also get out of a proportionally bigger 16:9 display.

That said, I still like the idea of a 21:9 display, because nearly all of the content I watch is wider than 16:9, and my living room is small. I'm just... wary (I also never watch TV with the lights on). With higher resolutions on the horizon, the scaling/pixel mapping concern should fade away, at the very least.