It is not difficult to see why.
Digital signals are robust.
Digital signals can be transmitted and copied without distortion. Digital signals can be played back without degrading the carrier. The ever-increasing performance and falling cost of DSP hardware have generated new applications and new markets for digital audio in both the consumer and professional audio sectors. Many recording studios now routinely master their recordings using 20-bit recorders. The most conspicuous incarnation is DVD which is capable of carrying audio with up to 24-bit resolution.