In the mainstream professional JavaScript world, my advice is to escape as quickly as you can, and pursue things where the learning focus is on more interesting things than the arbitrary whims of the authors of half-baked (because they never have time to mature before they die) frameworks. If you can just live on the fringes and write JavaScript your way and not worry about constantly impending obsolescence of your entire technology stack (from Linux all the way up to your JavaScripty CSS framework), though, I'm sure you can have a great time doing it.
I'm writing a lot of C and Ruby these days, and I love it. I get to learn more about myself as a programmer, instead of more about other programmers as fly-by-night framework developers.