Unless I'm missing something you generally want to know where the wind is coming from. ie a sou'wester for here normally means cool conditions off the ocean, an easterly brings hot dry conditions.
I don't give two hoots where the wind goes after here, I'm only interested in where it comes from and what it brings me.

My friends also care where the wind is coming from, if its south or south westerly, i'm in a good mood, if its easterly I'm cranky waiting/hoping for the sou'westerley.
Mood is also influenced by the colour of the arrows