Which is a nice sentiment, but it's also a bit naive. Like it or not, we live in a society in which the means to live in even basic comfort relies to an overwhelming extent on having enough money to pay for food, shelter, electricity, etc. This applies to musicians as much as anyone else. Now, I'd assume that most musicians are not professional musicians. I expect the vast majority have "day jobs" from which they derive their income. But I'd also assume that the more time they have to work at those day jobs, the less time they're able to devote to their music-making. So if a musician's trying to make a bit of money off his or her music, and I'm in a position to give that musician money for his or her music, but I choose not to, because "hey, it's available here for free download" - then, well, I'm just out-and-out dicking that musician.
If you've got no money, and I mean really got no money, like you're struggling just to keep yourself fed, then by all means get your music for free, however you can get it. I'm sure no-one reasonable would begrudge you of that. But if you've got the cash to spare, then why not send some of it in the direction of whoever provides the music that makes your life just a bit more enjoyable?
