Why aren't brick houses built by huge 3D-printers, which can work day and night laying out brick by brick like in the olden days?

"At eighteen he might have been a poet. Now he is not a poet, nor a writer, not an artist. He is a computer programmer in a world in which there are no thirty-year-old computer programmers. At thirty one is too old to be a programmer: one turns oneself into something else - some kind of businessman - or one shoots oneself."
- Youth (concluding paragraph), J.M. Coetzee - Nobel Laureate in literature, former IBM employee

ASCII?

You should see these punchcards.