I always take the time and effort to look my best as it ensures things start off on a good footing. We live in a judgmental world where both men and women are quick to make assumptions and to categorise individuals based on what we see.
In short, dressing sharp draws positive attention, shows maturity, radiates self-respect, boosts self-confidence and attracts and keeps wanted attention. Dressing down to what you might think is fashionable, particularly to a younger age group, can just create barriers.
I have also been tempted on occasion to dress (sharply) all in black and throw in a white dog collar to see what reaction I get when the door swings open