I prefer to have my main door open most of the daylight hours to let more light in. Cold weather or hot, I like to have it open, especially in the early AM if I got lucky and have a that side facing east..
Really don't care about using the screen door as a screen. I installed 1/16" plexiglass ( acrylic plastic ) in the bottom and top sections. Hard to see in this picture, but you get the idea. There is a slot in the door frame that seems to be for exactly this purpose. The top piece is a little tricky because of the radius, but slow careful work with a cut-off wheel in the dremel tool got me the needed curve.
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