We're all confusing the actors w/ the characters. The ages of the actors themselves are irrelevant. Picard was born in 2305. According to Memory Alpha, he was captain of the Enterprise-D from 2364 to 2371, so he was 59 to 66 years old.
Has anyone mentioned Guinan? She's possibly the oldest humanoid in TNG, and has hundreds of years on Picard...
Maybe the producers are trying to get us to subliminally like the show more by identifying Patrick Stewart as a father figure. Wouldn't work for people who are older then him though.
Jonathan, I think you're trying to read way too much into Captain Picard's age. You taking psychology this semester?