What age did you become independent?

At what age did you finally become independent from your parents/guardians? And by this I mean (not only) moving out, but being financially independent, as well?

In your culture, what is the "appropriate" age to become independent at? Are you looked down upon for being dependent on your parents past a certain age?

I'm curious to know!
I live in the United States & I feel like sometimes we face a lot of pressure to move out at the age of 18. In my current financial situation (in college with only a part-time job) I find it almost IMPOSSIBLE to follow such absurdly demanding cultural standards. What about you? Do you feel pressured in your community to move out & become independent, also?