[Barnsnake]

If the thermal switch for the fan is set slightly higher than the thermostat temperature the fan will only come on when the radiator isn't receiving enough air flow to do the job. My fan only comes on when I'm idling along in traffic or stationary. The engine temperature rises 5-10 degrees (F) above the thermostat temperature then stabilizes or comes down when the fan triggers.
Again, I'm concerned about the temperature of my engine, not some mid-point that varies with air flow and ambient temperature.

To each his own.