I use uTorrent. The biggest problem is it slows my web surfing down dramatically, so I turn it off when I'm surfing. I leave it on though at work, but turn it off at night because I'm on a laptop and I like to turn that off at night, unless it's wint...
It's easy to say "no, it's not needed" if your a person who does not need it. I say, if somebody wants it, they should get it. One day, technology might be able to change the very DNA that is in us all, until then, it's this.