Fulfilled life and death

Most people would agree that a life full of life is a life fulfilled.  If you spend your time doing what you love and it makes you happy, what more could you ask for?  I wonder how many people on earth can actually say they are happy in the place that they are in their life.  Maybe as the years go on people change their minds about what they want to do, is it wrong to pursue it and give up everything that you worked for since?  I believe that everyone can do anything that they want in life and I'm a firm believer of letting life go where it needs to go because you will always end up where you need to be.  Tredwell was an adventurer and did what he loved.  No matter how many times I laughed during the film, in the back of my mind I thanked Tredwell for his belief in what he was doing.  Maybe he was crazy, but he was happy.  I think about the loneliness he must have felt and how comfortable he felt with animals versus humans.  Makes me wonder how bad humans can be that someone would rather live with bears for the whole summer.  Should we laugh at Tredwell because he believed in his purpose so much or should we laugh at ourselves for not believing in our purpose as humans?  Humans are capable of many things, big and small sometimes I think we forget this.