Also, to add... you don't have to see how.
You get that, right? That you don't have to understand what works for others? You have to (on this site, at least) accept that others might like and work differently, and be okay with that, but your understanding is optional.
And also to add - you make it sound as if in games with GM meta-currencies, GMs use no personal judgements whatsoever. That position, and the truth, have very little overlap.
And it isn't like simulation games don't limit the GM, by the way. The GM's discretion in those is limited by the bounds of the simulation - break the limits, you break your sim.