You don't really do a hobby like this because it will save you money, or because you need the end result, you do it because it's fun. I've just started building

You don't really do a hobby like this because it will save you money, or because you need the end result, you do it because it's fun. I've just started building a reprap (3d printer) not because I need low-rez cheap plastic thingies, but because it's fun and challenging.