[member="Quoron Mantis"]
Well, lightsabres have a few distinct advantages. The first advantage being that a lightsabre can cut in every direction at any time and doesn't have to worry about blade alignment. Additionally, they cut no matter how little force you put into them, on account of their ability to melt through stuff. They are also easier to carry as it's simply a cylinder on your belt.
Still, they aren't as cool as a full on, metal sword.