Why JS? Because most developers are JS developers. [1]<p>To business decision makers, that looks like a better strategic decision - Now my web app devs can do server side! Obviously this is totally wrong, any decent developer can learn a new language&#x2F;framework. The architectural concepts are totally different on server side, which is what HR <i>should</i> be hiring against. But hey, what do I know.<p>1. <a href="http:&#x2F;&#x2F;stackoverflow.com&#x2F;research&#x2F;developer-survey-2015" rel="nofollow">http:&#x2F;&#x2F;stackoverflow.com&#x2F;research&#x2F;developer-survey-2015</a>