Why does Dave need a roommate?

M1: Hi, I stopped by to see if you were still looking for a roommate to share your house.
M2: Yeah, I sure am. Ever since I cut back on my working hours to go to school, I’ve been really strapped fog cash.
M1: Oh.
M2: Let me show you the place. Uh, here’s the living room.
M1: Oh. It looks like you could use a new carpet ... and those stains?
M2: Well. I know it needs to be cleaned, but I just don’t have the money to do it right now.
M1: What about the kitchen?
M2: Right this way. Look. It’s completely furnished with all the latest appliances, except...
M1: What?
M2: Well, the refrigerator door is broken ... a little bit ... and it won’t shut all the way. It needs fixing, but don’t worry. It isn’t that bad.
M1: Well how about the bathroom? Don’t tell me the toilet is clogged or the sink has a few leaks.
M2: No, those work fine, but, uh, the window needs fixing.
M1: Let me see. Where’s the window pane?
M2: Well, that’s another slight problem. I’ve put up a piece of cardboard to keep out the rain and snow, and if it gets a little cold, you can always turn up the heat.
M1: I can’t believe you’ve survived under these conditions.
M2: So what do you think? You really can’t beat a place like this for $450 a month. So it has its problems, but we can fix those.
M1: Uh, no thank you. I think I’ve seen enough.