My daughter is right around the corner from turning 12 and she is gungho about going to a babysitting clinic, becoming certified and then being able to babysit for the green ($$$).
I think it depends on the maturity of the child and whether or not s/he shows responsibility in everyday stuff.
Speaking of going out -- I cannot WAIT to go out once it is spring. Winter has not even started and I am already planning on hanging out with friends on a deck somewhere having a cocktail.
Yes, a Shirley Temple.