You say this as if it were necessarily irrational.
Clothes became chain-stitched (and later lock-stitched) because machines could chain-stitch. If there were a super-efficient hammering machine, it could be better to figure out ways to use nails to replace screws in designs than to hold onto screws just for nostalgia's sake.
"If there were a super-efficient hammering machine, it could be better to figure out ways to use nails to replace screws in designs than to hold onto screws just for nostalgia's sake."
How about for the sake of the bridge continuing to stand? Or is that not a good enough reason for the accountants?