I second this. I use and like CoffeeScript, especially if I'm pretty sure nobody else will touch my code, and especially if I'm just tinkering or exploring.

But after doing a lot of mostly CoffeeScript, I had to do some 'plain' JS work, and it took me a while to get back into it. And that can be a problem if you just need to get stuff done sometimes.

(PS: kudos for submitting this! I'm more than a decade older than you are, and I get nervous just thinking of sharing my code with this crowd!)