RK: I had a Slinglight and, as Dale says, it ain't much easier to get into or out of than the Monarch. It is light and sturdy, though. I gifted mine to my son, who is far more agile, and he loves it. [EDIT: Randy, I agree: the Slinglight does not feel flimsy. I'd-a kept mine but I found it a pain to pack because it doesn't break down, and my combination of metal knee and fused ankle makes it stupid-difficult to get out of.]
Brett is right that the Monarch doesn't let a fellow take his weight off his feet, they are required for balancing and, my footsies prefer to be off-duty at the end of a long trail day.
The REI camp stool that RK helpfully points to seems a possibility although I'm really looking for a chair with a back so I can recline a bit and suitable rocks or trees cannot always be counted on to exist in the exact spot I want for lounging view-taking-in. Sitting like a sack of potatoes on a stool just doesn't seem loungy enough. But, as Erik points out, it sure is nice to have something–anything–to sit on when putting on shoes or cooking.
The Crazy Creek chair mentioned by Donna looks like a Thermarest chair I used to bring. As a guy who has one (1) fused ankle and (1) titanium knee, I can say that climbing down to the ground and back up to get into & out of a chair like that isn't easy in the least and necessitates lots of undignified grunting and contorting.
I'm not a hammock person. Don't care to spend any time not sleeping laying down, and while the Hennessy Hammock is the best solution for a side-sleeper, the weight and cost, not to mention the frequent number of times my chosen campsite has no suitable pairs of trees, take hammocks out of the running as a camp chair.
Finally, Franco suggests that "A YouTube clip of you falling over on your Monarch chair may help in pinpointing the problem and finding a solution. Multiple falls taken from different angles would speed up the process."
I'll get a camera crew to follow me on my next backpack and see if I can't get enough data for analysis and embarassment.
So I think we have covered the options? Self-supporting or sitter-operated sling types like the Slinglight or Monarch, folding flat-on-the-ground chairs like the Crazy Creek and Thermarest, and stools like the REI? Anything else out there except for some massive car-camping chair from Walmart?