Why are ESFPs so good at letting loose and having fun, and how can we incorporate their carefree attitude into our lives?

Are hospital fees for the uninsured high enough in The United States to cover hospitals for unpaid bills or does some of that cost get made up by higher insurance premiums and fees paid for by the insured?
Have you ever had a surprise connection with someone after moving to a completely new place? How did it change your perspective on coincidences?