The best real estate decision I ever personally made was to purchase a home with a screened porch. In Upstate South Carolina, our climate is very mild most of the time, making a screened porch ideal. For about nine months out of the year I use the porch. It's great to have quiet talks on, enjoy family time, play with the kids, or just sit on the swing and think deep thoughts.
Tonight, I went out just a little while ago. The air was nice and cool, and the yard was dark. I sat on the swing and thought about my week - about the good things, and the difficult things. It was nice to get a moment to unwind and mentally purge. It was similar to what a massage does to your physical body. I got to relax and just enjoy life itself.
They may not be ideal in many areas, but if you live in Upstate SC, or you're GOING to live in this area, get a screened porch! You'll love it!