It's much more comfortable to sit around a campfire than it is to stand around a campfire, right? And while a rock or log can provide a nice spot to take a load off, they're not near as soft or as comfortable as a camp chair.
When choosing a camp chair, think carefully about what you plan to do in it. For example, do you plan to sit in it for endless hours on the bank of a glassy lake in the sun? If so, consider a chair with a sun canopy attachment, drink holder, side table and arm and leg rests. On the other hand, if you're backpacking, a chair is a luxury item, and you'll obviously need one that's as light as possible. A small fold-out stool may be the best choice, and even though it doesn't have a cup holder, you'll be happy to have it.