I agree it&#x27;s uncommon. I disagree it&#x27;s technically more demanding, even though that&#x27;s the folklore surrounding FP (technically more demanding than <i>what</i>, anyway?). The need for programming paradigms is seldom &quot;obvious&quot;, but I&#x27;d say the need for software with fewer bugs and good performance, written in a language developers enjoy using, should be self-evident.