I buy them for the ease & convenience - but I also let my friends use them if they want. Mine are mostly squares, strips, and circles. But also have the hexagons, the triangles to go with them, the double wedding ring and a diamond. A friend asked me is she wanted a specific die and would buy it would I let her use my machine and I said sure. I have thought about buying the log cabin die, but not really sure how it would work. But I do know some people that belong to guild share from time to time too.