A center cockpit tends to make for a more seaworthy boat, especially if it's on the smaller side. Not the least benefit is a substantially more comfortable ride in weather. If the teeter-totter is moving violently up and down, riding in the center of it is going to be far less violent than out on the end.
“Scientists are people who build the Brooklyn Bridge and then buy it.”
Wm. F. Buckley, Jr.