Unless dressing better has no bearing on your level of self-comfort.*

* - I am not one of these people. I work best recently bathed and shaved, in fresh clothes and with a clean workspace. Anything less drives me absolutely bonkers.

But "better" varies from person to person. If I dress comfortably I feel better and work better. For me comfortably != Suit & tie.

Well dressed does not imply Suit & tie (nor does suit and tie necessarily imply well dressed). I like to think of my self as well dressed and only very occasionally wear a tie (mainly funerals, weddings, and events where the dress code requires it). That being said I will on occasion throw on a three piece suit & tie for no good reason just to mix things up a bit :)