Do you choose your hobby or does your hobby choose you?
Obviously your hobby is not a sentient being so is incapable of making a choice. However, does something in your makeup predicate you to particular hobbies?
I used to work for a construction Consultancy company with ambitions to create a Quantity Surveying Team of 200 staff. Unfortunately a recession changed that objective to 'not part of the core objectives'.
Frequently, the choice of who to put on a commission was based on availability together with face fit. Neither optimise the selection for the Client.
I started to develop an Excel application that featured Personal Work History, Competencies Matrix, Roles and Responsibilities, and Resource Management to help indicate and manage the competencies of a person and department, and thereby help with selection of the appropriate individuals for a particular commission. It would also help with Training Needs Analysis and Skills Management.
After I left the company I started to develop that application in a SQL database hosted in Microsoft Azure.
Work and hobbies clearly intertwined.