What you wear is an interaction with the world, a language without words, but by no means silent.
Clothing is essential, unless you are part of a special community...! It's essential for comfort, protection, and even as an identifier. This person represents and enforces the law; this one has taken a vow of service and celibacy. How we present ourselves is an interaction with the world. Although we may wish to remain neutral, that in its self is a statement too.
Style makes the practical sublime
If you'd like to delve deeper, many books have been dedicated to this topic. Stay in touch - book list to come!