Psychological issues with parents, I don't know too much about Freudian psychology though. 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.
I don't think there's anything Freudian there. After all, Kirk was supposed to be an exceptionally young starship captain at his mid-thirties. I think that Picard is more or less the typical age. Of course, his age might make him seem more trustworthy - I myself prefer experienced pilots in their 50's to pilots in their 20's after all when I'm on an airplane...