Mph does matter to a lot of people,as it is an indication of the power in the car.There are a lot of guys that prefer roll on street racing,or running on the highway.A perfect example would be the evos or wrxs.They have decent 1/4 times,but its all in their 60fts.On the street most runs are from a roll so a car with higher mph will have a big advantage in these situations.A car that trapped a 100mph would be a lot faster than one that was trapping 86mph.What are you going to do drive around with your time slips in your pocket?