OK, I'll take a shot (using the simplest argument I have access to, without trying to sell you on something fundamentally different): the Oculus Quest, which uses the same controllers but isn't tethered to a PC and is coming out in the same "Spring 2019" timeframe, seems to be even higher resolution and also costs only $400 ;P... (edit) oh, and AFAIK the Quest will have mechanical IPD adjustment, a feature the Rift S apparently lacks (?!?), which is frankly an absolute requirement if you have a head that isn't exactly the average-sized head (I find the experience using the Oculus Go, which also lacks this feature, entirely unusable for even a couple minutes due to the distortion and blur, whereas I happily will spend hours inside of a Vive).