Ask HN: Why so many JavaScript frameworks?

Nothing wrong with having many choices but to answer the question I think it's because of the sheer of popularity it has. I mean it is the language of the web after all.

If you know how to program but not what to program, creating a framework is just about all you can do.

Because organizations with specific needs and significant resources often benefit from writing their own framework to exactly fit their use case. Consider Facebook, to a first approximation, there is only one framework. Google is in a similar position, though there may be more than one framework, there are not many frameworks.

For organizations without significant resources, JavaScript frameworks can be a bit like wearing someone else's underwear. Technically it works, but you're probably looking for a better alternative.