Simply because it has everything that others don't. Comparison Chart with StartIsBack, Start8. etc., http://www.classicshell.net/forum/viewtopic.php?f=8&t=2399 Others will say, "YOU DON'T NEED IT." I will say, "WHY NOT? IT'S FREE and it makes my daily computing hassle-free." Best of all, I like the customization and personalization part of it.