im confusd

J.K.R. is worried people are in love with Draco because he's, for lack of a better term, a total jackass.
Think about it:

He's only in it for himself. He's very full of himself (and not in a kind of attractive way, like James or Sirius), thinks he's better than Hermione (who is definitely smarter) just because her parents aren't purebloods, picks on Harry for absolutely no reason constantly, and then keeps changing sides.

One minute, he's all for the death eaters although that was mostly because they were threatening him and his family. Next, he's kind of for Harry. After Harry, Ron and Hermione risks their lives (and Crabbe dies), he STILL begs the Death Eaters to protect him, which is why Ron punches him and calls him a two-faced bastard.

I hope that helped.

I found this quote from JK Rowling:

"It amuses me. It honestly amuses me. People have been waxing lyrical [in letters] about Draco Malfoy, and I think that's the only time when it stopped amusing me and started almost worrying me. I'm trying to clearly distinguish between Tom Felton, who is a good looking young boy, and Draco, who, whatever he looks like, is not a nice man. It’s a romantic, but unhealthy, and unfortunately all too common delusion of — delusion, there you go — of girls, and you will know this, that they are going to change someone. And that persists through many women's lives, till their death bed, and it is uncomfortable and unhealthy and it actually worried me a little bit, to see young girls swearing undying devotion to this really imperfect character, because there must be an element in there, that "I'd be the one who [changes him]." I mean, I understand the psychology of it, but it is pretty unhealthy. So, a couple of times I have written back, possibly quite sharply, saying [Laughter], "You want to rethink your priorities here."

"Isn’t this life, though? I make this hero—Harry, obviously—and there he is on the screen, the perfect Harry, because Dan is very much as I imagine Harry, but who does every girl under the age of 15 fall in love with? Tom Felton as Draco Malfoy. Girls, stop going for the bad guy. Go for a nice man in the first place. It took me 35 years to learn that, but I am giving you that nugget free, right now, at the beginning of your love lives."

I guess she just really doesn't like the fact that all the girls like the bad boy.

Well, I think it is the sweetest thing I have ever heard about an author on his/her books or characters, but if JK indeed suffered from this sickness till she was 35, she should very well know, that this is no responsibility of hers, young girls are bound to fall for the bad guy. And that, I think,is not because we think that we can change him, but because young people dream of power, wealth and not having responsibilities. That is Draco, and not Harry, no matter how perfectly a good guy he may be. It's only later that we realize, we can't shrug responsibilities off, it's not wealth we need above all and we are way better off without any power, and at that point we do go for the "right" guy. For some, that's 35, for others 25, and for yet another person it may be 45, or so.
And of course, Draco himself is still a young guy, that is he might change, most likely to be a more mature person. That's also supported by appearances, the shallow side of the matter, which also happens to be more prior to young girls than inner character, especially on the screen: Tom Felton is way more handsome than Daniel Radcliffe.

@ LifesGoodx3: I find it interesting that Jo says "it is uncomfortable and unhealthy and it actually worried me a little bit, to see young girls swearing undying devotion to this really imperfect character, because there must be an element in there, that "I'd be the one who [changes him]." I mean, I understand the psychology of it, but it is pretty unhealthy." She says this in reference to Draco, yet Jo wrote in the same series about a kind intelligent girl -Lily Evans- who always saw the best in everyone as well as a very good looking, very imperfect character who apparently changed his ways for that same girl ie James Potter. Or is Jo perhaps in a way telling us that James never matured and never stopped being a bully?...