Why don't Google and/or Bing index images?

I'm a tad peeved by the slowness, or failure, of search engines to index images correctly.

So once again, I've worked on and resubmitted all metadata and site text etc. etc.

Yes I know search engines can only index text.

So search engines, take a look at this link again:  http://alisontoon.com

And in particular:  http://alisontoon.com/music