Most of the people choose to opt their hobby not as per their interest but most often, they choose as per the surroundings and options around them, so this is why some expensive sports are not known as common hobby for the most, for instance you wont listen people saying and claiming gold as their leisure activity or their interest. Because it requires a lot of money which not every one can afford.
Similarly is the case with surfing as it is tough to learn and you need a trainer and an ideal paddle board and a time to spend and a time to wait for the weather forecast to go in a surfer's favor.