Odds of Hanging On
The technology at the forefront of computer animation changes quickly, and that's both a good and worrisome thing when it comes to hanging on. If you can keep up to date on technology that's changing all the time, that should keep you and your skills in high demand. If you get stuck in the past, though—and by "past" we mean, like, two years ago—you could easily be left behind by the waves of innovation.
That said, there should still be plenty of opportunities if you keep current with the techno bells and whistles, keep your creative juices flowing, and stay pretty good at working with other peoples' creative vision. Don't worry, you've got this.