People in lives are just like symbols in sentences, each with their respective point to stress. Any misplace or lack would result in an impactful difference.
In life, there is always a particular group of people that would have impact a person directly or indirectly. Each actually have their own important role to play, whether they are there to aid or there to help one learn from a negative point of perspective.
Similarly for the symbols in a sentence, they would help define whether a sentence's tone appears to be asking, ordering, a continuation or marks the end.
I have had mine, have you?