in a world without music, life would go on. I interact with deaf people every day. They make their own music, through the rhythm of bass speakers, their heartbeat (they can be taught to dance through these things in incredibly syncronycity).
Deaf people have been depicted as sad, withdrawn, lonely sorts, living in a silent world. This is hearing people projecting their own image upon them, when deaf people are just like normal people.
Just because you can't imagine something doesn't mean it's impossible, just incomprehensible to you.
You are not Deaf, you have no idea what that would be like, but i assure you, life would go on for you if you were ever made such.
(wow i just pretty much repeated myself from august...)