As someone who spends at least a few hours every day working with vectors that are then output to a laser cutter or a CNC, I'm having a hard time working out wh

As someone who spends at least a few hours every day working with vectors that are then output to a laser cutter or a CNC, I'm having a hard time working out what exact problem this solves. To my - very likely entirely ignorant - eye, it seems to hyper-complicate something much easier and quicker done with a mouse (etc) and a GUI. I'm sure I'm just a bit stupid.