You obviously have never served in the military.  Landing on a carrier is not only very stressful, but highly dangerous to the pilot and the flight deck crews.  Have you ever seen what happens when a landing cable snaps?  Do you even know the amount of stress that is placed on that two inch thick cable to bring to stop a plane landing at full military power so it can take off again if the cable is not caught.  These cables can snap and it is not pretty picture to see with legs and arms severed. The pilot then has to take off again without a catapult and try again unless he lands in the water, then it is ejection time. 
Practice is what pilot must do so they are able to perform when an emergency happens and emergencies do happen.  I can attest to that alone with many other Navy personnel who have worked on a flight deck.   Watch them do touch and go's at the OLF.  Their performance their is measured.