Do you draw capacitors different sizes on the schematic because they are in real life?
What about op-amps? do you draw the familiar triangle with the inverting and non inverting input on one side and the output on the opposite apex (and often not even show the power supply connections)? Or do you draw the outline of the package you intend to use?
The schematic is designed to pass on information about how the circuit works, not (in general) how it will look when constructed.