Once you get over the learning curve, you really begin to see the productivity gains in your day by day to the point that any language without those capabilitie

Once you get over the learning curve, you really begin to see the productivity gains in your day by day to the point that any language without those capabilities fall short. Combine that with a world where most jobs seem to place a higher priority on other things than programmer productivity such as programmer fungibility, and your left with very few choices of places to work that allow you to be at your most productive. Say only Common Lisp had floating point arithmetic (or first class functions, or...) , and most other languages only had integers. You'd probably feel a bit hamstrun when tasked to do certain tasks in those languages.