When I go faster than usual, I always slow down around other traffic. So if the law accounted for that, that would be nice. It seems silly to be pulled over if you're the only one on the road.

However I can understand that slower speeds can reduce catastrophic results if a tire blows.

I suppose it's akin to wearing seatbelts: As long as you're driving reasonably around other traffic and only speeding when you're by yourself, then the law primarily is there to protect the one person.

Edit: is there something wrong with my comment?