I'm keeping my pre-order as I know I'll really want to get my hands on with it day one. But honestly, whether I'll keep it is another matter.
For me, as a PS4 owner, it'll be a Zelda box until Mario hits. "But Splatoon, but Mario Kart, but Arms" etc, yeah whatever. I'm not interested in those titles, especially given my existing backlog and ton of amazing games hitting PS4 over the coming months. So yeah, it'll be a Zelda box until Mario hits.
So, just like Wii U, it'll be another Nintendo console that spends the majority of its time gathering dust, with occasional moments of sheer brilliance. And I hope one of those moments happens to be a new Metroid Prime.