Well... maybe "unloved" would make your wisdom fit my view more precisely... because sometimes, "unwanted" overcomes "loved" for lack of an endowment to expand my shelf space... and a lack of eager recipients for old CP/M or RT11 docs. : - )
If you didn't program your executable by toggling in binary, it wasn't really programming!
Stock them in the attic for sentimental/nostalgic value (e.g. a book about the architecture of the MC6802 chip might be considered "unwanted" in the current era, but is *was* where I started assembler and having fun writing disassemblers)