I mean, of course it wouldn't be fair to expect everyone to be migrated over yet, but at some point it's going to be an obsolete language. Memory unsafety is a pretty nasty quirk; just one that was previously unavoidable, as far as I know.
Exactly. COBOL still gets used in legacy stuff, but at this point you'd have to be either insane or a historical re-enactor to build something new in it.
I've used C more than anything else, for reference.