Since Builder Bob knows how Fords start ... mine must be the exception ... she's always agreed with me when I want her to start cold ... hot ... and inbetween.
Marching on past that ... I use the block heater just as much to have instant heat in the cab. Like said earlier ... a block heater just makes it easier on the engine whether it will start with or without it. It's on the truck, so why not use it ...