I own Burning Wheel Gold (Revised). And there's a part of me that thinks that Burning Wheel is in many ways a "platonic ideal" of a kind of roleplaying system I would absolutely love. A system where character beliefs are hard wired into the resolution system, and PCs can't advance without actually playing up to those beliefs? Sign me up for some of that please. I am soooooo beyond sick and tired of playing RPGs where the characters are little more than numbers, optimized to meet some mechanical end. Burning Wheel feels crafted to specifically go away from that. I can very much get the sense for the kind of game Burning Wheel offers to participants, and I'm fairly certain I want that game experience.
Unfortunately, there's another part of me that knows, beyond all reasonable doubt, that based on the current player base for my two general gaming groups, that Burning Wheel will never, ever, ever see actual play at the table.