Mark Wahlberg is opening up about his future in Hollywood, saying he doesn't know how much longer he can stand in front of cameras. In a recent interview the actor and producer said, "Well, I'm certainly working harder now than ever. Certain businesses, you kind of build them, pass them on or you exit. Hopefully my kids, we'll see what their interests are, but I don't think that I’ll be acting that much longer at the pace I am now."