It seems as if the more grounded and individual is, the less 'interesting' he/she is. After all, you can only talk about how nice and calm and contented you are for a short time. After that, you just end up talking about your wild cousin who crashed his motorcycle for the thousandth time and broke his arm... or about your adventurous friend who just moved to yet another foreign country and is learning how to skydive on her summer vacation... etc...
Also note how poets and artists, etc... tend to be less "settled" and more neurotic, quirky, and depressed. Personally, I tend to write and draw more when I'm angry, depressed, sad, or moody. Perhaps gloom motivates some people to be more "active" in life, to question and reflect on life. People who are contented and absorbed with day to day business don't tend to question or reflect, but simply accept their life.
There are disadvantages to being "grounded", such as failing to take new opportunities, thinking creatively and outside-the-box, and reaching above and beyond what you think are limitations. There are also disadvantages to being "interesting", such as discontent with life, mishaps and failures due to not thinking things through, and backing out of commitments when things get predictable.
And yet, finding a middle ground between the two proves to just be confusing. Perhaps some "grounded" people find ways to be interesting and bring out their personality, and "interesting" people find a few constants that make them happy. Perhaps it all boils down to finding what, in life, makes you happy. Maybe the confusing part is not that I try to find a middle ground, but that I don't really know what makes me happy in life, or when I do, I excessively question it.
For all my thinking, I might just as well be saying "blah blah blah"... :P