Sometimes it is not. If you want the space usable through a wet November, or you are covering a large deck, a structure with a solid or louvered roof will serve you better than fabric. We will say so. Our
pergolas and patio covers handle those jobs, and plenty of homeowners end up combining the two, with a permanent roof over the main seating area and an awning shading the window wall beside it.
Bugs are a separate problem from the sun. If your evenings out there get cut short by insects rather than weather,
retractable screens in Nanaimo are usually the cheaper fix.