I think Karyonite's take is good. After unlocking everything, including every alternate recipe "There are no new recipes available, your harddrive has been returned to you.." (thank you btw for not just burning the harddrive) I'm left with a factory where I'm continually building new storage for the horde of supercomputers, motors and other higher-level items. In the beginning those items seemed hard to get, but now I just want to have something I can use the fruits of my labor towards. So anyways, yeah - I'd echo Karyonite's sentiment on the matter.