I feel pretty neutral about how my teeth look. I lucked out in my family by getting relatively straight teeth (my mom's were crooked on the botton but not terribly noticeable, and my sister's were crooked and she got braces when she was about 21). However, they've never been terribly white, and they have small chips along the edges.
Frankly, my larger concern is the health of my gums. I seem to have inherited my dad's gum issues (he had serious dental/gum problems and grew up very poor so almost never went to a dentist, and he ended up with full plates of false teeth at an early age). About seven years ago, after an unfortunate span where I neglected to to the dentist for a couple of years, I found out I had early stages of periodontal disease. It put the fear of god into me, to be confronted with the idea of pulling teeth at the age of 43. I am now a dedicated flosser, and I feel yucky if I don't floss at least once every day. My periodontist has been impressed that I have managed to maintain (and in some cases reverse) the condition of my gums. I hate going to dental appointments, but I've gotten much more used to it, because I have quarterly cleaning and evaluation appointments. It's not cheap, but I will gladly pay.
So, even though I'd love to do something to help the cosmetic aspect of my teeth to make them whiter and smoother, I don't want to do anything that might undermine my gum health.
I read a piece somewhere recently on the trend of many dentists "upselling" their clients, talking them into expensive semi-cosmetic procedures, often with the intention of "improving the bite." I'm skeptical about a lot of this, and I don't want anything that isn't necessary.
My husband has some awful trouble with his teeth. Numerous root canals, and now he has another toothache that requires attention. He also has had some work to "correct his bite." I can't help but wonder if that did more harm than good.
So anyway, I don't think my mouth/smile is my best feature -- thin lips, crooked mouth (yes, it looks ike I'm smirking in my closed-lip smile face), and dull-colored teeth, but oh well.