Its exciting the first time you see color in your pan, and that excitement seems to continue. Its work, but very satisfying (and profitable) when you see results such as Duke's.
Years ago I did a ring casting from melted nugs (little "pickers") and dust. I soldered 6 small nugs on top. Over the years it wore down (no alloys) some and the nugs got smaller and smooth. I've put it away now as a keepsake, but was tempted to sell when gold when up a while back. Its still a pretty hefty chunk.