Region3
Ryder Cup Winner
I use mine a lot, if only to confirm a yardage that I think I know.
Unless you're a low single figure player, knowing the distance to the front, middle and back is enough. I tend to play for the middle yardage - if I hit the green I'll generally get down in 2. I'm not good enough to hit to a specific yardage.
I'm with you in the "not good enough to hit a specific yardage" boat, but I don't always hit to the middle yardage.
The way I see it, if the flag is at the back on a 30yd green, the middle is 1 club short (I work on 10yds per club) so why not hit the longer club?