Bill Gates is certainly a dildo, but one should not just assume that artists only care about how many people see/hear their art. If that were so, why do so many truly great and artistic bands/artists/etc sell their art instead of just giving it away for free? Knowing people are enjoying your work is great, but you've got to put the bread in the basket somehow.
Be careful not to fall for any of the classic yet lame and tired excuses for piracy.