Art is illusion, no doubt about it. Music is about creating dreams, making illusions. Artists create dreams not only for themselves, but also for those who can't create their own.
The question is, are dreams something good? Maybe we need to dream...
Everybody wants to dream... Why is that? Do we need dreams?
Furthermore, isn't everything a big fantasy in the first place? Aren't we illuding ourselves when we think we live in reality?