Do you realize we live in a planet which has a volume of 1,097,509,500,000,000,000,000 cubic meters. If you still think you know so much you cannot be more wrong. We get this life only once then why not try to explore something new every day just to admire the myriad of things we have at our reach. When we get old, the experiences and memories we acquired make sense the most.
One added advantage is, for those who are still wondering where your interest lies in, it could definitely help you find your passion and meaning of your life.