I think you were thinking as you were typing, since you reversed your position a bit, but faster 3D printers will make them MORE useful.
There are many things that are impractical to print as a result of how slow 3D printers currently are. But if they were faster, then you can make things as you need it, you can make things where you don't know what you need to pack beforehand, and you can make disposable things on demand.
Same with computers. Many of the software we use regularly now were considered impractical with much slower computers with smaller storage (spam filters, any 3D graphics game). By making them faster, a larger class of things were available to be made more useful.
In the far far future (say 30-40 years), if 3D printers were fast enough with good enough materials, some startup can make a physical dropbox. Never use storage again. Digitize what you want to store, and recycle the object. When you need it again, print it out.
There are many things that are impractical to print as a result of how slow 3D printers currently are. But if they were faster, then you can make things as you need it, you can make things where you don't know what you need to pack beforehand, and you can make disposable things on demand.
Same with computers. Many of the software we use regularly now were considered impractical with much slower computers with smaller storage (spam filters, any 3D graphics game). By making them faster, a larger class of things were available to be made more useful.
In the far far future (say 30-40 years), if 3D printers were fast enough with good enough materials, some startup can make a physical dropbox. Never use storage again. Digitize what you want to store, and recycle the object. When you need it again, print it out.