Money changes everything. It can turn a pleasure into a job and lead to burnout. It is good to do some things just for pleasure. Don’t make everything into a career or side job.
That’s the great thing about Medium. You are not tied to one genre. You can write whatever you want. Fiction, poetry, humor, essays. It’s all good. Poeple will read what they want to read and skip the rest. And if you don’t depend on it for money, it can be very enjoyable.