Good to see R (and of course Python) rank so high, particularly with regard to SPSS and MATLAB.
I have a love/hate relationship with R. One the one hand, it's an ugly, difficult language that was created by statistician, not programmers, and that history shows when you (attempt to) use it.
On the other, I can take it with me wherever I go, without having to convince any new management to drop money into an SPSS or MATLAB license. As a bonus, RStudio is one of the nicest IDEs ever built, RStudio Server/Shiny are both amazing and great products.
