You do realise you've wasted both my time and your own. If you thought about it from the start, it's obvious that I was referring to the learning curve. All facets of all Turing-complete languages are useful once you've overcome the learning curve. What varies is the length of time needed before you become proficient in using it. For another example...

The learning curve for manual memory management in C is a major issue, but not the principal of manual memory management itself.