Because its challenging to fly, it doesn't have fancy gadgets like JHMCS, it doesn't have Fly-By-Wire to keep you from killing yourself with the wrong stick input you need to fly good ol stick and rudder. The Tomcat has alot of character, history, and its own culture. One of the biggest reasons I stopped flying the Hornet, and chose the F-14 over the F-18, is because the F-14 gives me raw feedback into how well, or how poorly I'm flying via the airframe buffet (shaking and rattling), that alone made all the other jets sterile to fly, this plane taught me how to actually fly and made me drop alot of the bad flying habits I had developed from when I flew the Eagle, Flanker, Mirage, and Hornet.