I think it is still worth it. I flew into IAD last night at 1800 or so on TK 7. I cleared Immigration in 10 seconds or so due to Global Entry. I was not ready for the picture(only part of my face was on the ticket). I waited 15-20 minutes for my bags. I am not sure if the other airports have dedicated lanes for Global Entry but I am sure during Rush Hour it saves people a good amount of time. You still have to wait for the bags but it is not a huge deal. I was asked by the Custom's Officer "What food I was bringing in". I said just Chocolate and Candy. He took the ticket and said "Have a great day".