Some people when shopping for cars will start off being purely concerned with looks. They may look through a few thousand of them before finding the one with the proper curb appeal to knock their socks off and they may never worry to much with how it drives, maintenance, etc. Nothing wrong if that's what works for them.
Me personally, I can't pretend that there aren't some cars that just won't appeal to me, it isn't my biggest concern. I'm much more interested in peeking under the hood and kicking the tires and in something which is low maintenance. Not because it matters in itself, but simply because I'd rather be out playing than in the shop for half the day. Ultimately what matters is if you hop in and she gives you a good ride. If that's the case then a few dents and rust spots don't really matter.
And once in awhile, such as after a really hard day, or for no particular reason at all, I'll break out my bucket and soap, and spend the afternoon washing and waxing and buffing her as best I can and then tell her she's the most beautiful thing I've ever seen. And she will be, not because of how posters of ourselves would look on the wall, but because she is my speed machine that sends me flying.