R language is one of the most used languages in the U.S. in terms of Big Data and Data Science.
Is it the perfect language to use? If you're looking for short-term results non-complex code or hardcore flexibility, or even less coding high resulting. YES! this might be your language. But if you're looking for creating hight intensity program that has the tools and advance, provided with a sophisticated big scale, wealth libraries and more... you've python to achieve your demand.
R or Python ... you the one who decides.