I didn't buy much music when I was young. I love music, I played the piano and listened to the radio but I was boring enough to save my money for the future. I hated to be out of money and wanted to buy a house later on. Now I know that you may not be happy even if sitting in a really big house. But music can make people happy, at least for the moment.
Did you know that there is a site called blip.fm where you can share what other people (called DJs) recommend. It's like a music blog. Most of the music there is what's available on YouTube. Then you get some new influeces too. Especially if you know someone who is sharing music there as a DJ.