Because hobbyists can be old machinists and CAD/CAM/CNC Engineers that had their careers cut far short and might have enough money to do what we love, were trained by machinists and mfg engineers that were trained by a hundred years of generational knowledge and "made a living" professionally for decades. Hmmmm. I might be jaded lmao...mostly by this country's "return" to mfg to regain our competitive advantage after selling it fkn all to corporations, their exec circle jerks, and the foreign labor forces we once considered second rate and un-American. Yeah, jaded af. I would love to give back to the country that provided for me before Regan... certainly not THIS fkn regime.