I have noticed several different types of stories other developers have had. Some want to stay in the past with ES5 and stick with what they know. Others are early adopters and jumped right in. Still others were dragged kicking and screaming to ES6 and have a lingering resentment. Realize this is one of the biggest advances in JavaScript in years. It's going to totally change how you write code. You can't expect to just switch without mentally gearing up for this. The folks I've seen who've had the best experience with this were ones that