Totally agree. Action figures and Millenium Falcon models are fun, but the real benefit for 3D printing for people with some technical skills is making repair parts, making custom devices and the like with low input of personal time. Telling the robot to go fabricate is far more appealing than a day of milling, filing, drilling and otherwise shaping. And there is a lot of satisfaction out of recovering a previously unusable object. Battery compartment covers alone are worth it, even though they are usually fairly challenging to 3D print.