Once the desire to get circcumcised has been triggered, if it doesn't go away, it is here to stay. In the end, no matter what triggered it, you will feel incomplete until you go through with it.
If, as you drop your underwear, you would rather see a bare head on your penis and don't like seeing your foreksin over it, then circumcision is for you.
I suppose that's true. I wonder what happens to guys with the same itch in the other direction; what do they do to scratch it? A couple of my best friends are absolutely mortified at being cut; they're so ashamed of their "permanently exposed" glans that they go to extremes never to be nude around anyone else. This includes being extremely cautious about who they ever have sex with until they're really, really intimate with that person over many months or years.
My buddy Brian told me once at lunch that he cries every time he gets out of the shower, because there's a large mirror behind the sink and he's crushed by what he sees. He's well hung, but can't countenance that part of his penis is missing. He never, ever changes at the gym because, to him, exposing a cockhead is sexual and he doesn't want that intimate part of himself ever to be seen by strangers or even friends.
Just like what you describe, the thought of his penis being "imperfect" never leaves him. It affects his self-image and self-confidence deeply. Learning and seeing what he was missing triggered profound feelings that are with him to stay.
Fortunately, neither the majority of intact guys nor the majority of circumcised guys live with these deep feelings that they must "change". They know it's possible to make their own awesome experience, whatever hand they've been dealt. It's no more mentally healthy to long to be cut than to long to be uncut. Either one can eat away at a perfectly good life.