Our purpose is... To achieve what we want. [Of course, we are still limited to laws & human rights]
I want to be a boxer - I SHALL BECOME A BOXER!
I want to be a writer- I SHALL BECOME A WRITER!
I want to be both - I SHALL BE BOTH!
We don't need a "high" purpose in life, as long as we are happy. If you want to aim high, be sure it will make you happy or it's pointless!
Though you have to consider the billions of people around the world that don't have alternatives but to work medial jobs that are arduous and low-paying.
In order for you to pursue your goals, it is required that production, agricultural, and other services are performed. Further, jobs that are hard work, but a bit higher paying are also necessary, sometimes they are not considered fun, but rewarding and purposeful in ensuring the needs of others. Such as, tax accountants, doctors, legal specialists, EMT, corrections ect. Not all of those jobs are necessarily fun, they are high stress, risk, ect. and provide services to others.
Many people would love to write, act, sing, paint/draw, play a sport of for a living (hobbies), myself included, but if too many people were to do so, as a career, seeking happiness in a hobby, in that it doesn't produce a product required for social institutions to function, then we would have an issue.
That is why we have formal education and parents stress the importance of careers. Careers allow for us to explore those hobbies in our free time and allow us to live our lives with less stress, and ultimately, more happiness. For, if the stress upon hard-work in difficult positions was absent, stability and order would deteriorate and chaos would ensue. The existence and time for hobbies or any passtimes, outside of work, would not be a priority if services such as sanitation, garbage, argriculture, electricity, government structure, ect. were not provided in our every day lives.
Life is not solely fun and games, and, it is not possible to for it to be so, some fun and games can only exist when other, less entertaining or sexy careers are fulfilled. It's funny how janitors have a stigma of being unintelligent and/or less important persons of status, but, in fact, they give us freedom. Things to consider as we define our own purpose. Balancing the fun and joyous things in life with the arduous and tedious work ethic. Perhaps, individuals should engage in both productive careers/work and creative/athletic hobbies and interests if we are to increase the happiness of ourselves and others.