I actually love RStudio for what it does. In general I'm a huge CL advocate; RStudio is basically the only time I'd rather use an IDE than the terminal. Looking at data, code, and plots simultaneously is easy - I haven't found anything as elegant for Python, including pycharm.
Yes the language itself has problems. It's 1-indexed for God's sake! But if you stick to what it's good at (dplyr, ggplot2), you can get a lot of mileage. What Linus Torvalds said about C++ programmers probably applies doubly to R programmers - so yea comments are going to be sparse. And if you venture far from its core competence of data, you're gonna have a bad time. But overall Hadly Wickham and the tidyverse are driving the ecosystem forward, and R has found a great niche between python scripting and Excel/Matlab