Is Dressing In Sweats Inconsiderate?

As I was getting lunch today with one of my friends, Chris, he brought up the subject of fashion and how few students at my school care actually care about their looks. Personally, I have never worn a pair of sweatpants to class, but I also am not the preppiest individual. I generally like to look presentable, but also I like to be comfortable which helps me concentrate.

A majority of my school is made up of those students who wear sweats and work-out clothes to class almost every day. They way up five minutes before they need to leave, throw their hair in a bun, forget the makeup and run out the door. I always considered this a personal choice- if they do not care what other people think of them, then good for them! However, as I was eating lunch with Chris, he mentioned how he thinks it is inconsiderate towards other to dress sloppy. I was slightly confused at first, but as he started to explain himself, it actually made some sense! If other people have to look at you all day, then shouldn't you do them a favor my dressing nice? You do not have to look at yourself, so why would it matter how you dress. Nobody else wants to look at your butt hanging out of saggy sweatpants, or have to stare at your zits all day.

Some people prefer to avoid the preppy looks because they do not want to be seen as arrogant. Are they actually being inconsiderate of others though?

Personally, I am still not sure how I feel about the whole conversation. I completely see his point, though I had never considered it all. I enjoy wearing my hair down and putting make-up on, so I very rarely leave the apartment without it. However, there are times when I rush to class and throw some running shorts on with my hair is a bun... Am I offending others? I will definitely be more observant now, and probably more self-conscious as well! I would like to know, though.... Are you offended by others who dress sloppily? Or do you think it is merely a level of comfort for an individual?