Nowadays you could listen to your own music anytime of the day, anywhere. While on board a bus or train, you can easily turn on your MP4 and enjoy your own music. The person next to you could also enjoy his. Very convenient, right? Especially with cordless headphones, you don't have to worry about the wires getting tangled in your sleep.
It is also very convenient to use a wireless headset in your home. For one, you could listen to music while moving around the house freely. You can be preparing a meal, relaxing on the couch or simply sleeping. You don't even have to be anywhere near your CD player !
As supposed to using the wired ones, you have to be at least two feet from your computer in order for you to listen to music. You don't have to be near your computer If you are wireless.
Of course the best thing about having a wireless headset is you can turn the volume to as high as you can and you don't disturb anyone. You could get lost in your own world and no one will even notice. Cool, right?