As ZR600 stated the old homes are fed at the light. I like hitting the switch myself for a couple of reasons, like ZR said, less labor overhead also there's always gangable boxes were if the load allows u can feed everything right there, or hop to another switch. The old over head systems had the spyder wiring too, where everything came to the center of the room and tailed down to all devices in that room. But there's the switched outlet, where a lot of electricians wire the end of the line outlet to the switch for a switch leg and identify it.
