>> I shoot a ton but 95% of it never makes it past import

If you've got a computer friendly game controller, one neat way to speed up your culling is to use some key mapping software (Joy2Key on Windows, Joystick Mapper on Mac) to make the controller's buttons map to rating or mark for deletion commands for LR/Aperture/Other. You can then sit back and zip through your shots very quickly.

I occasionally get the "culling" bug and spend an hour or two doing it. Then I realize that time is better spent on making new images, postprocessing images, or doing my day job to pay for the next photo trip. Most professional photogs I know spend very little effort or time on culling.