Bingo! I too live in my parents' basement - it has it's perks and a few downfalls as well. Aside from saving money, I've found it easier to code at all hours of the night and day while in the basement. There's also an added sense of privacy which seems to give me some mental comfort as well. On the downside, I've now become part of the super-nerd stereotype: jobless and living in my parents' basement. =)
On a side note, I've also found it increasingly difficult to keep in touch with old friends post-grad. The majority of my time is now devoted to my projects rather than hanging out or attempting to reconnect.