That depends on definition of NEED
You can do all things in this game just with a mouse instead of a joystick. Quite a number of people do. BUT, and this is a big "but", it´s much more difficult than with a joystick. There are actually a few mousewielders who managed to be as successful & deadly as the best stickflyers, but they are very few in numbers. If you are not that gifted, any joystick will most probably improve your game experience by a huge margin. It does not need to be a 300$ full HOTAS setup, get yourself a cheap 20$ stick with a hat and after 2-3 days you´ll know what I´m talking about
