I mostly use mine for having fun. I just like experimenting by changing designs around, scanning in already created things and then redesigning them. I must say that if you were to walk into my house you would immediately know that I have a 3D printer, by all the plastic things I have laying around. I think it's fun. I know that right now it's not that practical, but in the coming years I think we will see more and more practical things that can be printed, and more and more cool designs that become available.