I just wanted to say kaliber that giftedness doesn't stop. There are a number of books on being a gifted adult that you might find interesting such as Gifted Grownups. Like aeh I hope you have gone on to find satisfaction but hearing your comments about your lack of PhD and contempt for the education makes me wonder.
Is there something you want to do or be which you feel you haven't achieved? If there is then there hasn't never been a time in history where opportunities have been so available via the internet. There are opportunities for study if you wished or perhaps writing? You are probably already aware of all of that but if not, have a think or a look around.
Being gifted brings challenges at any age as we seek to understand ourselves and our world.