I did, mostly for painting 3D textures directly on models (Z Brush etc). I knew a traditional animator that converted one of her old light tables with a Cintiq. It was pretty badass.
I had to tell a job lead (not via linkdin) that I don't frequent the site and please contact me directly. They did, it was like we never needed it. I freelanced most of my work and I never got a gig from a job website/social media platform.
I got pretty severe shoulder and neck issues from sitting in Aeron and Mira chairs doing production graphics. Lots of pointing and clicking. I found an old gaming chair in a storage closet and haven't had the same issues at all. Never looked back. Ergonomics should include what kind of work, duration, repetitive stress, monitor size, height, distance, body type etc.
I use my Cintiq, keyboard, and mouse. I was able to build mine into my desktop with a tilt feature that goes from 80 degrees to almost flat. For some reason having it sunk into the table makes it easier for me to draw for long sessions. Your mileage might vary.
if you draw or photoshop, a wacom screen is a life changer. not an ipad pro or surface, a 20"+ wacom cintiq on a solid desk is still light years beyond anything else out there. also, if you edit video, a usb shuttle wheel with mapable hot buttons makes cutting much faster than click and drag. really good speakers are important. lastly, get the best chair (with a headrest!) you can afford.
The Dog in a V-Neck Sweater