I dislike the "shades of gray/full colors" vs "black & white" thing, because IMHO, create the idea that exist several competing and contradictory correct answers to things. I tough still exist one puer solution, but several * approximations* that, because our limitations and/or limitations in the tools we use look like different (in computers, the final solution is expressed in assembler/bits. Languages are a illusion!).

But at the end, and with the age, I think is become clear that some questions beg for a better answers, but suck to solve it with our current approach. And I for example, all the time, working with python, obj-c, sql, delphi/pascal, javascript, coffescript, foxpro, html have the constant grief of "What if, I could to do this, instead of what I must do, because I can't with this tool!"

However, I firmly think is super-important to use several, opposite languages, to truly discover better ways to do things, learn more effective, faster, expressive or whatever approach to a solution, and broad the selection of tools to solve a problem. For example, when I use c# or obj-c, I tend to look the solution in python (my personal experience have taught me that python folks have the super-easy-to-understand solution to anything). I'm gratefull to have learned first foxpro. Is my secret sauce to be better with sql databases. I kill to have linq in other languages. How I wish to have learned haskell before. How I hate the verbosity of anything except python. Why python have null exceptions? And so on.

Is not, I think, the true realization of many, claimed to be: "shades of gray" but instead: Look, understand the life, universe and everything else become simpler when we have telescope, microscope, radioscope, math, physic, art, music, literature, science fiction, the other boring but useful science...........