Why are you looking for fulfillment in a job?

As the other commenters stated, if you’re spending a significant portion of your life doing something, it makes sense to try to make it something you at least enjoy doing.

Wouldn’t it be better to find meaning in a hobby or family? Maybe writing a book? Painting?

Yes that’s well and good but the options are not mutually exclusive. You can have a rewarding hobby life AND a job that offers some measure of satisfaction and enjoyment.