&gt; IMO the only reason to use rails if you don&#x27;t actually understand how web development actually works.<p>I&#x27;m not following your reasoning. Just because Ruby&#x2F;Rails runs slower than Java&#x2F;Spring, why does that mean you &quot;don&#x27;t understand how web development actually works&quot; if you choose Ruby&#x2F;Rails?<p>That&#x27;s a serious question. Runtime performance of a language&#x2F;framework is only one small sliver of the overall performance of a large system. And overall runtime performance of a system is only one factor, among many, when choosing the right stack for a business.