Tacks easily. The combination of weight with a homogeneous, relatively concentrated mass and with a keel to pivot on—this contributes to easy tackinge
Large load carrying capacity
Relatively lower tech construction methods that are less expensive can be used because weight isn’t as critical
Traditional good looks
Motion comfort. The concentration of mass, and relatively smooth hull sections promote a comfortable motion at sea. By depending on ballast, not just form stability, you achieve a degree of motion comfort that many people are used to
Don’t spend many fuel
Disadvantages for chartering a sailing yachts:
Slower
They heel. It’s true. However, modern sail handling options such as in-mast furling allow you to control the amount of heel by easily adjusting and balancing the sail area all from the cockpit
The rig is larger. In order to maintain performance with this heavier displacement, we need to have a bigger rig to supply power in lighter airs
Volume vs length? Displacement is the measure of volume. Longer length gives you more motion comfort, in general. You can have a short, heavy fat boat with the same volume as a long, narrow lighter boat and both may have similar volume, though the prices may be similar. I can assure you, though, that the longer, lighter boat will sail better and have a more comfortable motion