True, the only right answer for a question like "Should we use X here?" is "It depends". Maybe NIH is the right answer in some specific case but not on another that seems quite similar to the first.

Some months ago I was re-enlightened when Anders Hejlsberg (creator of C# and TypeScript) explained why they chose Go for reimplementing the TypeScript compiler, instead of using any of those languages or something like Rust.

The way they defined the problem, the tests they did and how they justify their pick is how these kind of decisions should be made if we want to call ourselves engineers.