Need for Speed?

Is there really a need for speed in small cars? I see commercials with small cars with 250 horsepower but do we really need to go 180 mph? 150 hp is more than you need to go 80 mph, but 10 miles above most standard speed limits. I feel like it is a waste of money paying for a car with a top speed of 180 mph, and the extra weight decreases gas milage. Feel free to express your thoughts.