Why is iPod the most popular? Mostly advertising, personally I don't see much wrong with the iPod as long as you get it second hand. The prices are a joke, unfortunately, since I like to my "iPod" or whatever I have as a USB mass storage device, 1-4 Gb isn't going to cut it.
Try finding a more reliable high capacity Mp3 player with as much tech support. Now before you mention the Creative Zen, I haven't tried it, so I don't know about it, except that its also too expensive. Once people realize how much it costs to make high capacity mp3 players, the prices should go down, plus competition should help a lot, its just not there yet.
I don't think people are stupid for buying an ipod. Perhaps uninformed, or following a trend. Now, if you bought a Zune, I'm sorry, you must be stupid. Even if you had no idea how bad a knockoff made by Microsoft would be, no amount of ignorance can excuse you. Thats right, your sweet hearted grandmother who got you one for Christmas? A moron! No excuse!
PS, I use 2 sandisk 512Mb mp3player/recorder/fm radio models. They're not great, but they were cheap, and although I can't even hold enough songs to get me through a few days, its not too big a problem. Plus they run on triple AAAs, so that means I don't have to have a computer/wall to charge from. If someone wants to mail me an ipod, I wouldn't mind a 80gb+, don't bother with color screens, video, or touch, those aren't worth it either.