I can go on and on and on and on about reasons why people hate sound and tell you about every bad experience I have come across but Google is bountiful in those results so I'll leave that to Google.
However, I think it is important to point out a website which actually uses sound to it's benefit and provides a unique and memorable experience:
For future readers
The website above is designed to feel like an underwater scuba scene where you see bubbles and other aquatic items at the bottom of the sea. For me, it is reminiscent of BioShock.
One other instance where sound is greatly appreciated would be FaceBook messenger because it will ding when a new message arrives if you have you chat window open.