I might just be unusually sensitive to this, but there is a downside to awnings that hardly ever gets mentioned. Yes, an awning keeps your house cooler by blocking sunlight, but it also blocks sunlight, reducing the natural light inside your house. This means you either sit in the dark or use more artificial light, which is fine except natural sunlight is (for me at least) very beneficial for mood and for maintaining the circadian rhythm.
I know lots of people who don't mind living in darkness or seem to have a personal vendetta against the sun, and maybe those people would be genuinely better off with awnings, but I don't think they're for me.
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