Comfort and Convenience
Where a driver likes to sit relative to the wheel is a personal preference: body proportions, habits carried over from previous cars and the length of typical trips all push people toward different positions.
Safety and Driver Assistance
Spending a few minutes with lights, wipers, mirrors and climate controls before setting off means less searching later. Preparation while stationary keeps attention on the road once the car is moving.
Multimedia and Connectivity
Keeping a phone charged on longer drives is a separate need from playing music or taking calls. If a socket or charging point is available, it simply removes the worry of arriving with a flat battery.