People who still write C, honest question: Why?
C is full of quirks. From cryptic "undefined behaviors" to a type system that isn't really a type system (more like "size hints for the compiler"), the language doesn't feel easy to use/debug. Add to this CPP macros, a universally recognized bad idea, a clunky import system, and lack of a single reference implementation of the compiler/libC, and you have a language that is harsh to defend.
Also, documentation is all over the place. If a function isn't described in `man`, I have no idea where else to actually look for it.
I used to think "C presents the most honest representation of the low-level mechanisms of the computer", but... even this is shaky. I've been programming for almost 15 years now, and I don't think I've ever seen a computer where memory is actually a continuous array of bits sorted by memory address. The C representation of memory (and all the pointer arithmetic) is not a real representation of your hardware, and this too is an abstraction.
So, setting aside the need to maintain 30+ year old code, what would be modern reasons to start a new project in C?