Plus Welterweight just sounds cool... Cooler than Straw weight or Cruiser weight or light middle weight... Then the glory of Heavyweight of course... I think the history of Welterweight is enough for people to want to make their name there in this day and age..

But mostly as everyone else said, for the person of average height, that is where it's at regarding weight... The mixture of speed plus power is balanced... Welter has the largest showcases of different styles and attributes and boxing skill....