We're just different

Why is it that women talk 2x or 3x more than men? I read that somewhere and it seems to apply in most all areas of men/women communication.

A good example that happens very often is the conversation Mike and I have frequently that goes something like this:
M: Keith stopped over today for a few minutes (this never happens BTW, he doesn't come over)
D: Really? What was he doing?
M: He rode his motorcycle 110 miles today.
D: Oh wow, what did you guys talk about?
M: Nothing.
D: Oh, so you just sat there staring at each other?
M: We didn't stare at each other.
D: Well then you must have talked about something. Where did he ride to?
M: Julian
D: Did he stop for pie? You have to have pie when you are in Julian.
M: No, he just rode
D: Wow, so he stopped by here? That's unusual.
M: Yeah
D: I can't believe you won't tell me what you talked about.
M: Do you want me to make something up? We didn't talk about anything.
D: That doesn't make sense

You see, Keith and Mike have been friends since middle school when they attended Catholic school together, college, etc. Mike talked Keith into moving from South Dakota to California when Mike had been here for 9 years. They are at year 6 in the next city hooked to ours and we rarely see them. It is so weird. You would think that we'd see them but we don't. I can't say anything more about that because it is a sore subject. At least the guys are still best friends even if they mainly talk on the phone 10 miles apart. Whatever...

Back to the subject at hand. I always want to spill everything that I talked about with people and I can't get anything out of Mike. I am not sure if he just doesn't want to talk to me about what they talk about or if he just doesn't want to talk to me. Either way, it bothers me enough to post it on my complaint blog so I can just let it go (hahahahaha---that is funny). Well at least if I complain on here, I am not starting arguments. Right?