3D printers by themselves are one of the most ridiculous fads I've even heard of. Never once have I seen a 3D printed thing and said "this is amazing!"
Never once have I looked around and said "if only I had some squishy plastic to fill the void in this particular machine I'm fidgeting with"
Now, a 3-axis, or even x-y table CNC router to turn billet steel into a viable part, yeah okay I'm onboard. Still over my budget and I have no place to put the thing but I'm intrigued.
There's a viable use for 3D printers I suppose. This guy has made a sort of 'sled' that you can zip-tie your Vive controller to your toy. That would be cool.