Giannis Letsos
First of all, great figures!However, I could not agree with the part 'Most 3D printed gifts are garbage'. A gift should be an experience ...
A wooden gift could also be garbage, but wooden gifts commonly have some time and effort put into their design, construction, and finishing. It also takes some degree of skill to fashion wood into something.
If it were a handmade wooden object I think it could be great. If it is a plank of wood placed in a CNC router, or laser cutter/etcher, then I would not think as highly of the object.
Given two identical objects, one in wood, the other in plastic. I'd value the wooden object more. Assuming that wood was an appropriate material for the task. I'd prefer a plastic cup or toothbrush to wooden ones for example. A better cup might be made of glass or metal. It all depends on the application.
Pressing "print" on a 3D printer to obtain a plastic doodad can result in some cool gifts, but the majority of things made on a 3D printer would be better made from a number of other materials, or processes.
People use a 3D printer because they don't have the skill to make things by hand anymore.
If you look at the amazing examples of wood, stone, and metal craftsmanship from 100+ years ago and compare it to the trash commonly produced in 3D printers, the contrast is depressing. Despite our advancements in computers and manufacturing, our ability to fabricate beautiful objects has diminished.
Even CAD programs are a disappointment.
Look at the amazing cars which were developed on paper up through the 1960's. Then see the monstrosities of the 70s and 80s which were computer based. 40-50 years later, things are better, but there is much room for improvement in body styles.
Engines and other systems of course have made great advancements in the same time frame.
There are exceptions for sure. I'm speaking here of larger trends.
A visit to a site like Shapeways will show a number of printable items ranging from "garbage" to "that's pretty cool".