Second kitchen or fifth bedroom?

[David Matthews]

I've got a one story w/ basement ranch home. I have been living in the basement (1b1b) and have been fixing up a second kitchen down here. Last night standing in the kitchen I was thinking... should I turn this area into a bedroom when I eventually move out? There would still be a sizable living area in the basement. 

To give more info... there are plenty of 5bed3bath homes in the area. I currently rent by room for the upstairs. Purchased in Nov24. Do not have a separate entrance to the basement (received quotes way out of budget for that). That's all I can think of at the moment!