Why did people wear hats more often?

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Current Events » Why did people wear hats more often?
In the 40's and 50's men are wearing hats outside all of the time. Why was this? Especially when that generation was so against wearing hats inside. Watching old movies almost every man throws on a hat going outside. Definitely good for skin cancer. I am curious of the reason for taking them off inside. Did it go out of style for that reason? Who wants to show up with hat hair?
Bethany took my pickles. All of them. Even the spicey ones.
Current Events » Why did people wear hats more often?