History wind can be useful when your previous sector winds weren't as forecast, ie, unforecast high winds/jetstream.
The company I work for does not supply climb wind data so inserting history winds provides a more accurate TOC (as kijangnim pointed out).
Some days it can take up to 200nm+ to reach TOC when entering a strong tailwind/jetstream. In this case of using history winds, the TOC gives the crew a more accurate cruise segment and in turn may change the optimum altitude hence probable time and/or fuel savings.