|>>|| No. 27072
Porn can be fantastic, particularly PoV style scenes (to absolutely no-ones surprise) work great. You can get an idea from a certain gerbil themed site's VR section but suffice to say watching on a flat screen is no comparison to what a head set offers.
The rest depends on what you mean by "proper games". There are some lovely "experiences", aka. VR movies, available for free on Steam (I particularly enjoyed "Allumette", a version of The Little Match Girl, "INVASION!", a fun cartoon about incompetent alien invasion, and "Surge", an abstract music video). Many of the more interactive games are pretty short or can be done in bite-size sections as well.
I have a Vive and completely agree with >>27070, the resolution is good enough for games and animation (I'm sure the brain fills in a lot of the details to cover up short comings there) but text in particular needes to be cartoonishly senior-phone-sized huge to be comfortably legible. You're not going to be reading ebooks on this thing or browsing the web for text content. There are "cinema" programs that let you view a movie as if it were on a massive screen which work OK, but forget anything with subtitles and if you're really keen on 4k video: prepare to be disappointed.
Also note, for the Vive in particular it is not a portable system requiring several plug sockets and reasonably sturdy mounting for the light houses (which make a quiet but noticeable high pitched whining noise, so if you sleep in the same room as they are you'll want to power them off).