Sport bikes have come a long way in the past thirty years. In the 1970's they were those 10 speeds that everyone seemed to be riding. Now, sport bikes are a bit more like road racing bikes, although you still won't be winning any races in them. They are still a good way to get around town, commuting, or to take a ride with the family.
*Don't take a sport bike on tough terrain or through mountainous areas—they're not really equipped for that.