Well, I don't think that many of us are advocating being nobodies. A character without depth, without emotion, without drive is probably not going to be an appealing character to roleplay for long. A flat character - what I imagined when I see the word "nobody" - is unmemorable and probably unenjoyable.

On the other hand, being the bastard son of Thrall and Jaina, thrice blessed under the moon by the goddess Elune Herself, heir apparent to fortune, fame, and glory is the other extreme - and the extreme that most of us want to avoid more than even the flat character.

The goal, then, is to find some sort of balance between these two aspects. It's easier by far to avoid a character that is the center of the universe or one who has to be at the center of the stage at all times. These by far are the most berated, bemoaned, and belittled of our brethren. No one likes the character who usurps the story from his grubby paws. No one likes the character who has to be the most important at all time. No one likes the character who lacks depth, history, foresight, or even any measure of leniency; these are the characters for whom the game exists for their purpose and everyone they come across are just background in as they play their magnificent role.

However, the boring, bland, and flat character I would consider is the more insidious of the two. It's more difficult to recognize this type of character. Furthermore, these are the people who are the most difficult to get involved; due to the lack of drive, the lack of interest, and lack of depth, these characters are not ever driving forces in the universe. This is, of course, different from characters who have little to no control over their own path because they very well may have some reaction to what the future has in store for them. They're hard to bring into the fold because there is nothing that could drive them into doing something. They are, for all intents and purposes, "nobodies".

Your character, with his faults, low bearing, bad habits, and lack of couth, is a SOMEBODY. He has depth. He has something that drives him. He possesses a personality. He is someone that I might not want to spend a lot of time with if this were real, but this character is someone that I would WANT to include while weaving stories because he presents something different and intriguing. Despite fear of sounding silly, he possesses a soul that a "nobody" would otherwise lack!