3D-Printers get a bad rap. They are fantastic, life changing machines but many people find it hard to use them because many of them can require near-constant maintenance. As a user, you just want to be able to use your machine without needing to get an engineering-degree to do so.
With Ottia's exceptionally modular design, this is never a problem. Every machine eventually wears down and Ottia is certainly not an exception to that; however, with swappable tool-heads and replaceable arm-segments, you're never more than 4 twists and 2 clicks away from a complete fix.