We need screens on our windows.
We don't like flying insects.
Note to Bob Knight:
All sorts of people told us when we first came to CO that houses don't need screens, especially in the mountains.
Well, we've already spent enough time at Roosevelt Ridge to know that we want screens in our house. Well, we really don't want screens, but we DON'T want bugs, so screens seem to be required.
I'll grant there aren't as many flying bugs as in Maine or the Keys--but more than we'd care to have inside with us.