What Is Escapism? How Does It Cost Me?

I think the goal is to find work that minimizes the need for escapist entertainment. I might be lucky but I consider my job to be fun. In other words I consider programming and problem solving to be fun, and just lucked out and found someone to pay me for it. Sometimes even when I go home I still think about work problems. I certainly don't have to and it is not related to deadlines, it is just what I enjoy doing. Is my employer getting more work-time from me without paying over-time? - Yes, but I don't feel exploited or forced to do it.