Couchsurfer #3

I'm hosting my third couchsurfer. This one is a different from previous surfers in that (a) she's a woman - both of my other surfers were male and (b) she's not from out-of-town. She's an actress/set decorator/industry person who lives in LA and is apparently in between homes at the moment. So, she's crashing here for three nights. So far, it's going fine and I have no reason to believe that won't continue. Jason was over here when she arrived and he was asking her some questions about her experience with couchsurfing (as a host and surfer) and he seemed very skeptical of the whole idea. She said that typically men are more suspicious of it. I wonder why that is?