Smile,,between rejection and acceptance

Smile doesn't cost neither money nor efforts,,it wouldn't need but to draw some simple signs on face to show you're comfort and pleased, to show even you're smiling in some way. why do we meet people with frown faces in the morning,?Why do we have to bear their bad behavior?yes it's rather unacceptable and unbearable scene..
In short,i live such a bad life with people who don't know how to draw a smile on face ,,or rather to say good morning so calmly and emotionally,,
That's always my fate and not any thing else,,,
What do you see dear friends?