We ourselves hate ourselves. We do not smile, because it is regarded as crazy. There is even a saying, something like: 'A smile for no reason is a sign of a stupid person'.
Madness string 94291
Even if your smile is objectively the dumbest-looking smile in the world, anyone who genuinely cares about you will be happy to see it regardless, because it shows that right now, in this moment, you're good. You're happy, amused, whatever, and that's not dumb at all.