I believe that anything that causes you to smile like a Muppet can safely be classified as a dangerous medical condition.
It's okay for Muppets to smile like that; they don't have any facial muscles, and are controlled by other people. They are tools of amusement and learning for children, and their structural simplicity is part of their charm. The only way they can possibly express joy is by bobbing their heads and opening their mouths as wide as possible. It's suitable for them. As sentient creatures with complex thought processes, or even just balls, it is an aberrant strain of aggressive weakness, like a virus that consumes the man from within and turns him into a stuffed animal, a soft tool of amusement for other people to control.
The difference in Muppets and Soypeople is that Muppets are largely benign. We see Muppets exactly as they exist in nature; the set of a children's TV show happens to be their natural environment. Even Animal, the most unruly of the lot, is really just a nice guy on a Keith Moon kick. He wears his wide, frighteningly-unnatural grin (the only one his bone structure will allow) along with the rest of them, and wouldn't harm a fly.
For men, however, this passivity is dangerous. Smiling signifies submission for a man. Not smiling is not about "looking tough," it's about "not looking like a mark." Occasionally, sure, a man is going to smile. Hopefully. But it shouldn't be a pathological condition. How easily conquered, trampled, and destroyed he certainly must be, to bear a grin of such open ambivalence, such childish, stuffed-animalistic faith in his surroundings, to smile like someone who thinks the tepid kiddie pool he thinks he lives in is going to last forever.
A soft, childlike smile on a man is like a guy who sticks his head out of a moving subway car. It is a form of suicidal mania, a passive way of begging for annihilation.
Chicks don't like it, unless they're interested in the subjugation of masculinity, or have a thing for Muppets. Both of which exist. Regardless, wearing a look of tepid wonderment does not make you harmless.
It makes you easy. Behold the horrible images below.
Make the world a better place: get yourself some scars, eat a steak. Learn to shoot. Don't be afraid of getting your ass kicked; indeed, I have learned more from getting my ass kicked than I have in situations where nothing painful or embarrassing was required from me. Flipping off the camera while wearing a pussy hat and drinking from a bottle of "Silk" requires nothing. Wearing your weakness on your sleeve isn't strong. Acknowledging the shame of it, and weaning yourself from it, is.
I'm not a tough guy, and have never claimed to be. That doesn't mean I have to be a wimp. Not looking like an easy mark is a sign of self-respect, a survival mechanism. Not looking like the world's biggest cuck is something I need to do to respect myself. It doesn't mean I'm tough. It's about self-respect.
Don't blow your brains out about it; we've all made mistakes. Doing stupid things is part of life. Staying stupid, however, is not.
Good luck!