1. It looks cool. 2. Minority report, no. Gits, yes. 3. Everybody. Probably nobody. 4. Probably to multi-task. Multiple screens that sort of thing. VR gaming had the same problem in the beginning. Wasn't until games like adrift and beat sabre showed up that it started to finally hit a stride. Or at least a compelling use case (Good VR games to play.). 5. See 1.