I could not have explained it better !!!
Thanks to Alex Knapp from Forbes magazine

 Captain James T. Kirk is one of the most famous Captains in the history of Starfleet. There’s a good reason for that. He saved the planet Earth several times, stopped the Doomsday Machine, helped negotiate peace with the Klingon Empire, kept the balance of power between the Federation and the Romulan Empire, and even managed to fight Nazis. On his five-year mission commanding the U.S.S. Enterprise, as well as ...