I think the real problem is the disposability attitude you just described. It's prevalent in our real world consumerist economy and it's killing us there too.

Building software that's to be thrown away is a waste of mental resources and physical resources. Society and civilization advances on top of our lasting creations, not the ephemeral ones. Reinventing the wheel doesn't advance the state of the art. You want to build one good set of tools that will last a long time, so you can stop thinking about them and be free to tackle the next truly new challenge. Doing anything else is just a waste of life.