It was so much fun!
/When Albert A. Michelson, the first person in the United States to win a Nobel prize in science, was asked at the end of his life why he had devoted so much of his time to measuring the velocity of light, he is said to have replied, “It was so much fun.’ And lest we forget, Einstein wrote his most influential papers while working as a clerk in the Swiss Patent Office. These and the many other great scientists one could easily mention were not handicapped in their thinking because they were not “professionals” in their field, recognized figures with sources of legitimate support. They simply did what they enjoyed doing.
Mihály Csíkszentmihályi, Flow