Roads and Weather

Did you ever notice that if two middle aged men are having a conversation nine out of ten times it either about directions or weather? It's either "Oh, you just gotta take I95 up to New Stanton and head west on the Orange Belt," or "The storm's supposed to hit at 4:00, but I felt the wind change about an hour ago."

Why? Why is it that there default conversational topic is either something that's been relatively the same for decades or something that changes hourly?

Hopefully when I hit 45 I won't join the club. I'm betting I'll still be complaining about George Lucas.