I have had all spare games, but it has been years. Very rare in todays environmen for two reasons. First, its almost impossible to leave makeable spares consistently if you arent hitting the pocket. Second, almost impossible not to have a couple of strikes if you are hitting the pocket most shots.
Most people on these boards arent old enough to remember the playing environment before short oil patterns started in the late 70s. This was the era that ushered in designer splits and 5 count buckets. Big 5, 3-6-9-10, 2-8-10. Carrydown on short patterns made even seemingly easy spares problematic.