To play devil's advocate a little bit contrary to what other people have commented: you being rude is just an efficient way of filtering out unnecessary interactions and social niceties. If you were polite like everyone else, then you end up wasting more time with watercooler chit-chat and having to maintain all these subtle relationships. If what you're doing works for you, then by all means, as long as you are conveying useful information and not actually insulting other people.