Realistic dreams

Somehow I had a lot of dreams at night these days, and they were all pretty realistic.  The one that I had last night was about going back to hong kong and trying to find jobs.  Then one I had a night before was about chatting with my mom, dad, brothers and my sister.  There were even more than one occasion that I was dreaming about refactoring code, like literally about how to consolidate some c# source code into a more readable form.

I wonder why that was happening.  Am I not living my life enough in day time?