I am not a zealot as I do not really "love" any language. I have used many languages and my "love" changes depending on the nature of the project / task within the project or sometimes client insists on particular one. Language to me is a tool like a screwdriver and while I do have personal preferences as long as the language is not atrociously bad / not suitable for the task I do not really care.

I am kind of in the "old is gold" camp but not because I do not want to learn new language (I actually do) but because this language needs to offer significant benefits.

If I am to use Rust it would be for writing enterprise backends as this is what I use this type of language for at the moment. Currently I am using C++ for this. When I look at using Rust for the same purpose I see less expressive language with less ecosystem comparatively to C++ and need to dance under fresh moon while sacrificing virgin to accomplish some simple things. All for the benefit of memory safety without loosing performance.

Current project is already 3 years old and I've yet to discover any safety related issues in it (leak, range error, use after free etc.). Modern C++ in my opinion provides enough scaffolding to write reasonably safe programs on the language / library level and with things like address sanitizers. So switching to Rust would not really give me any ROI on investment. If client wants it in Rust and pays for it then sure. Otherwise I have more interesting things to learn.

I am being paid for designing and implementing products, not for being expert in particular language.