For me it’s the time. My local club doesn’t run matches but has practices where we set up a stage or two and run it a few different ways on the timer. I enjoy that. I’m impressed by the fast guys, and work to improve. But “real” matches involve several hours of driving plus the time at the match, and given my other obligations and choices the match just isn’t that appealing.
In addition, all the work folks have done here posting drills and standards have made it easy to have a realistic sense of my basic skill levels. I can look at my own timer and know I’m slow.