Why don’t modern men where suits in casual dress on the streets or in the parks like men in the 1940’s to 1950’s and 60’s even as early as the 1920’s?

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Why did modern men stop wearing them as every day clothing and only wearing them to interviews
Why don’t modern men where suits in casual dress on the streets or in the parks like men in the 1940’s to 1950’s and 60’s even as early as the 1920’s?
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