Perhaps the largest flaw of this request is that it creates the impression that you must dress a certain way to enjoy indie rock. Stereotyping is the death of any music genre. It narrows the fan base down to only those who are willing to conform to a certain style.
Instead of coming home and immediately checking Facebook, an aspiring writer could be finishing the rough draft of his or her future bestseller. Rather than wasting the night away on Twitter, that young person who wants to be prime minister could be reading up on world issues.