With sketch up you can do things you wouldn't be able to do on a 2D drawing.In 3D your drawing will look more realistic.I learned that when you use the orbit tool you can look at your 3D image at different angles.Another good tool to use is the rectangle tool.You use the rectangle tool to make different sized rectangles.To make the rectangle 3D, you use the push/pull tool.This tool can be use to make the rectangle taller, shorter, longer, or wider.

Sketch up is a great program to use.Being able to  create 3D images shows your creativity and also helps with better understanding a design or an idea.