To echo what Painter and whatisis said, its true that some skim, but if attention isn't paid to what they've written, then the battle gets that much harder. Sure, there is some fluff, but within it is the truth, too.
And, their profiles are about them - not about you. Think of it as a car sales ad, because in a sense it is really an ad, the seller will describe what they are selling, not who is buying.
I have a very good friend who put her ad on match not all that long ago, and when I asked her about why she wrote what she did, she simply said "I put it to describe me and my likes, because that is what its all about. It's up to the other person to like it or not, if they do and contact me, great, but they need to be able to show me they paid attention to what I wrote and not just my pictures." She is very pretty, btw, and told me you'd be surprised at the things she gets - for instance, the story on her holding her niece...she described the picture, but this one guy asked if that was her daughter, which made it obvious he didn't read. She likened that to someone who talks to you but doesn't listen. And yes, her profile is very, very witty. And smart.
There are moments in this life when you are so confident in the rightness of your actions, that not even for a second do you consider the option that you might be wrong.