The answer to this question that everyone asks is simply, no, setting goals are not important at all... IF you are happy with what you have.
People that hit their goals tend not to set any more as they have achieved what they set out to do. For example, if your goal is to win the 100-metre sprint and you do that. You’ve hit your goals and they become unimportant.
Having said that, obviously if you're not happy with what you have right now or with what you’re getting then YES of course setting goals