[ajeet_dhaliwal]

Is this a problem? If you are trying to launch a prototype or even a first version of a product and you want to be as productive as possible use what you know. I love Node.js (and React for front end) and don’t see how I would benefit from switching to other frameworks I’ve used in the past. It’s not like it’s hard to learn something else, as long as you understand the fundamentals of server/web/client it’s the same stuff done slightly differently.

[hermannbjorgvin]

That's true, it just seems like there might be downsides to only working in one language. Even though the upsides of Node and React are great.

[wvenable]

It's good to know other platforms and languages so you can adequately answer, for example, whether or not those upsides of Node and React are worth the downsides. If you have nothing to compare to then what do you base your opinions on?

But, that being said, there are downsides to trying to work in more than one language/platform. The main one is that you only have so much brain capacity. You simply can't be an expert in every platform out there all at the same time. So if you have a language/platform that you know really well and is suited to task you're doing then you really aren't doing it wrong.