I lived with my parents until I was 29 and then shared a house with a friend for about a year. I have lived alone ever since. I also stayed in college longer than normal. Mostly I was just avoiding having to deal with the real world.
I got some ridicule from some people, mostly women, for living with my parents so long and I felt ashamed of being so dependent. I might have benefited from forcing myself to learn how to live on my own earlier, but perhaps it would have been a mistake. I don't see much point in second guessing how I have lived my life.
In this economy, living on your own is a good deal harder. There isn't any shame in it so long as you are making a reasonable effort or else everyone involved is happy with the arrangement. Frankly it doesn't matter what other people think if it works for those concerned.
_________________
Never let the weeds get higher than the garden,
Always keep a sapphire in your mind.
(Tom Waits "Get Behind the Mule")