A couple of weeks back there was an article making the rounds of the fediverse about how people with reasonably decent incomes were nevertheless living "paycheck to paycheck", and a number of examples were given in the article with their individual stories of woe about how they were baffled by how burdened with debt they were. Most of those stories, when you dug in with just a slightly critical eye instead of an automatic assumption of victimhood, revealed people making foolish choices to take on debt and support the maximally lavish lifestyle that they could manage.
The comment section was weird. It turned out that there were some people there who thought this was perfectly reasonable, giving examples of "necessary expenditures" from their own lives that were just as excessive when examined. If you think that building a deck or buying a new bed simply because it's "time for a new one" are necessary expenditures then it's kind of hard to be sympathetic when you complain about how you have no money for long-term savings.
Is there just some basic personality type that finds it hard to be responsible with money, or is this a failure of education somehow? I have ideas for how to help but help will be unwelcome by people who refuse to recognize that they have a problem.
I could see it being useful for keeping the sun off, serving as a refuge from insects (depending on the local biome), perhaps serving as a changing room for privacy. But yeah, it should hardly be necessary. Just another frivolous expenditure, only do it if you can genuinely afford it.