Comment by hmmokidk

The thing is, I find immutable is safer. Less side effects is more predictable. OO is used often when things can just be functions. I love gamedev, and OO makes a lot of sense there because all of the computations and unsafe code is kind of okay. But for webdev FP makes so much more sense. For SAAS something like elixir enables me to write more reliable / less buggy / better tested code.