3D printers promote uncontrolled consumerism  While 3D printing may revolutionise professional manufacturing and lead to less waste, in the household it promotes mindless consumerism. By producing anything desired cheaply and more accessibly, without even having to leave your house, they encourage people consume much more than they otherwise would. This happens because individual consumers tend not to be concerned about the sustainability implications of every purchase: they will do so even less when 3D printers allow instant gratification.  On one hand, it can make people more dependent on material possessions, which makes it harder for them to attain more sustainable forms of happiness. Additionally, this eventually leads to more waste and overproduction, reversing all the potential benefits of industrial 3D printing.