If you are not experiencing any problems with your network, then there is nothing you need to do.
Airplane Mode is probably badly named in Windows, it is not just for taking laptops on an airplane, it has many uses because it disables the Ethernet connection, WiFi and also Bluetooth.
Some people use it as a method of saving battery on a laptop, also, it can be used as a quick method to stop online interruptions such as notifications if the user needs to concentrate on work or studies on their PC, and also, it can be used as a method to quickly reset the Internet connections and Bluetooth if the user is experiencing network problems.