If you love music, you will wonder how you ever got by without one. I bought my first one when they were in their second generation, and had not yet exploded in popularity. When you have kids, it seems like all your music takes a back seat to Raffi and Barney - well the iPod helped. I could listen to MY music while DD watched Raffi or Barney!
I use it when I exercise or walk the dog, and lately, I listen more to Podcasts (not the knitting one though) and audio books than I do to music. I have less and less time to read, and would rather listen to the book on the way to work. I have the earphone lanyard for my Nano, and have a carkit to listen in the car over the car stereo.
I NEVER listen to the radio anymore other than NPR, and I don't think I would ever buy satelite radio when I can listen to my own music and shows.
Brandi, you can go to the site PJ mentioned and download iTunes and get the experience on your PC without the ipod you can carry along with you. It is free - try it out! You can subscribe to most podcasts for free too. Some Podcasts are great, and there are several good Disney ones that are fun. The only drawback without the ipod is that you will have to listen on your computer.
John1