Looks are very important to some people, and it's understandable. An appearance gives people a quick snapshot of how another person functions. Naturally it's uncommon for a man to approach a woman if she looks haggard or unhealthy.

It's important to keep in mind that it's very hard to separate a person's appearance from their demeanor. For instance, I'm rather short, but many people don't notice this until I stand inches away from them, because I always walk tall. Posture is a way that confidence and appearance entwine. A boost to one equals a boost to the other.

Some of these preconceived notions are justified. Others are not. It's natural to see underconfidence and connect it to something like being overweight, but not vice-versa.

Does that make sense?

...And of course there's no reason for anyone to denounce any traits of sensitivity.