Torrents are useful for some things, like picking up Ubuntu ISOs, and the live concerts that I listen to (which are, for the most part, a gray area under the law, at worst).

Why rip with WMP if you have Audacity? And why watch/listen with WMP when you have VLC? Each does the job better than WMP, and the fewer products, the better. (Though to be fair, Microsoft Security Essentials seems to be pretty good, and is free.)