Barring support for older tools why are keyed chucks still manufactured? Hopefully not just in my own ignorance but I view keyless chucks as just a useful equivalent without being tethered to the need for a key.
A recent question I asked had a link to http://www.jacobschuck.com/ which hosts this image on their main page:
They both look beautifully manufactured but why bother getting a keyed chuck? Is it a matter of what the tool supports? Seems unlikely, to me, since I would have expected both chucks to be similar in design, in that respect, to be attachable to the same tools.
Either save me from my ignorance or enlighten me as to what I am missing by favoring keyless?