I played with the idea.
My brother has got one, it takes up a space, patience and cost of printing materials.
I quickly dismissed. There are only so many wall brackets and rolling trays, that take an age to print out before it becomes obsolete and a bore.
I've seen a couple of lovely things that he has done, but they have taken days. I suppose if you have projects in mind it will be great but I can clearly tell most things he has done are unessersary and have been printed just for the sake of it.
Breadmaker from me.