It's all about how you perceive things though isn't it Kew?
I've suffered from chronic self-esteem my whole life, probably due to an older sister who physically and emotionally abused me until I was lucky enough to leave home.
If you, like me, were told your whole childhood that you were ugly, disgusting and adopted because no one else could bear looking at you etc., looks become a focal point of your unhappiness with yourself.
I know you will now be thinking, well therapy would have been better, and yes, I have had therapy! To the point that I'd just got to the point of actually liking what I see in the mirror, but bugger I'm now 40 and getting wrinkly (earlier than I wanted and I think caused by my old stupid fault).
So sue me because I now want to improve, quite easily, what I've been too late in realising I like!
I am sorry for your health issues though.