Why do people use the "I'm doing it for myself" excuse when dressing revealing?

Why can't people just admit they want to find confidence in other people's validation.

Where did this excuse come from that they do it for themselves, let's be logical for a sec, if I went shirtless and flexing my muscles in public in boxer briefs who would assume "oh wow he must be doing it for himself" πŸ˜‚

I'd like to assume the first thought in people's minds would be "stop showing off you meathead and put on a shirt" πŸ˜‚
Why do people use the "I'm doing it for myself" excuse when dressing revealing?
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