I run my front light in blinky mode, but its not that bright and its pointed down towards the road about 10 yards in front of me. The neighborhoods I ride in after dark have great street lighting, so no real need to run anything that's as bright as an aircraft's landing lights.

That said, what someone said above about the off-street MUPs in my area after dark is true. No lights on the MUPs but bicycle riders seem to want to run the brightest lights they can find and point the light straight ahead. I'll sometimes start just before dawn and those coming towards me almost blind my vision. Geez, if you're going to ride on the MUP adjust the light down toward the asphalt path surface where the hazards might be, I know I can see you're dimmed light and you can see mine.