I pin A LOT! The only exception to that is when I use 505. I can't break myself from my pin habit entirely, but I think I only use half the pins I normally do.
I've sewn over 4 pins in my 8 year history with quilting. I remember each one snapped and a sharp piece hit my glasses. Scared the bezonkers out of me each time, so I'm almost anal about slowing down enough and pulling the pin at the very last minute. I do find that my corners are a bit more accurate now though.....wonder if that has something to do with it.