Earlier quoted context omitted.
You did and will keep getting downvoted (like my comment below about GIMP's usability will), but you're absolutely right. This is another case where developers decide what's cool, and of course pick features that are cool to them, not their users. Not once in my life would I ever think I'm missing that feature in GIMP.
The feature was developed to help identifying bottlenecks in how GIMP uses cache. It was added to make GIMP faster. Do you want GIMP to be slower?
So, as a user I have to identify bottlenecks, now..? That would be my first question.
Since you're implying that by not thinking the performance indicator is an important feature for the average user I want GIMP to be slower, yes--actually I would definitely opt for a slower, usable program than a fast unusable one, and I never thought speed was a problem of GIMP.
Right now I'm running Wine to be able to edit this PSD file without going crazy trying to use GIMP's interface, so obviously speed is not what I care about. I'm sure I'm not the only one, since other problems and not speed seem to be stopping people from using GIMP as their image editor.