Not really, just because there are a lot of measures of a person and just because I may be ahead of some people in some areas (book-smarts, education level, and, despite the average amount of exercise i do, physical fitness for a shocking amount of people), I try to respect what that person has to bring to the table (life experience/street smarts, career/financial success, etc).
I can come off as condescending sometimes, but that's more a factor of my tendency to say what i'm thinking accidentally than any attempt to belittle anyone.
I'm only rude to those who are rude to me first, and even then only if it's in a capacity where that behavior is acceptable (e.g., don't be rude to rude customers while on the job)