When starting a new software project, one of the first choices to make is the programming language to use. This choice is mandatory: without it, you cannot proceed.
This choice is hugely impactful, as it defines what libraries, frameworks, and tooling you have available.
Even if similar frameworks, libraries and tools exist in a different programming language, there will be many differences: the functionality will be different, the terminology will be different, the APIs will be different, the undocumented and/or buggy behavior will be different, etc.
Porting a software project from one language to another might as well be a full rewrite.
Some tools (e.g. Ragel) cross languages, which makes them uniquely useful, even if they have some tie-in to the host languages.
See also: There is no cross-language standard library.