Once, this realization came to me when I worked at a fortune 10. I loved the job and was fascinated by the cool tech we used everyday. One day I came to work only to find out I was fired. My manager was just as surprised to hear it. Obviously it was a mistake, but my team watched as security guards came to escort me out of the building like a criminal.
It didn't matter that they figured out it was a mistake. My coworkers became distant when I came back. When the story blew up, my employer denied I was ever employed there. An ex-coworker later told me that my position and projects have been completely scrubbed out of existence.
A job is a job, if you can focus on your own gains please do. Then spend a little bit of time on this fun Ask HN[1]. We can't all get a job that loves us back, so in the meanwhile find something you love outside the job.