As for me?
I can genuinely say I am happy with my life right now. I have a great family (seriously, I lucked out there), great friends, and a job where I get to use my degree. Not many people can say that. That said, I still have a lot I want to achieve in life. These unfulfilled goals and experiences aren't so much weights around my ankles, but a driving force in my life. There are places and events I want to experience, and career milestones I want to achieve. Basically, I want a full and rewarding life. I want to sit in my rocker when I am 95 (hopefully, haha) and truly be able to say to myself I had a good run at life.
While I would say a good life certainly has its share of spontaneousness, I don't always look for the next big thing to do or experience. I can exist in the moment. So while I still want to see Europe, or go to the next awesome concert or football game, I am equally content sitting around a campfire enjoying the company of a few close friends. I care more about the people who are around me than what we are occupied with. I have done Murder Mystery Parties, Wine Tours, and climbed mountains. The shared experience with family and friends is what makes them so memorable. I suppose all that sounds a little cheesy, but I think it accurately describes what I am looking for out of life.