Actually, they do. Because these are raised from birth by and around humans, they're human-friendly even when they're grown. There's a 25 year old panda that still plays with it's keepers.
They've started a new program over the last few years to introduce pandas to the wild and hopefully get a new breeding strain out there because there's only an estimated 1600 wild pandas alive. They take the best genetic matches from those that have been in captivity the least and still have some skills to live in the wild, and mate them via insemination (females are only fertile 3 days out of the year). Then they let the mothers care for the babies in a facility that's mostly wild, so she can teach the babies the skills to survive. It takes years to get them ready, but then the youngster is released with a tagged collar. As far as I know, only a couple have been successfully released thus far. The first one died a year or two after release via leopard attack.