For instance, I enjoy my job, I don't dread Mondays. I like my coworkers and the work atmosphere, I enjoy creating tangible value and I find the success of my work projects intrinsically satisfies me. But at the same time, I don't work weekends, I don't work outside my ~40 hours, and I don't sacrifice my wellbeing for my job. So I work hard because of the personal satisfaction, I don't do it to make already rich people even richer. I don't know how it is for others, but personally if I didn't get some level of internal satisfaction and motivation from how I spent the working time of the best years of my life I would be quite depressed.
I don't want to take anything away from you. If you are enjoying your job and your life, that is truly great. But I would encourage you to take care of your future. Make sure you have progression, or something else, to show for it. You wouldn't be the first one to change perspective when life, or work, changes.