1. Aргумент за:

Some movies tend to present life from ideal angles, which are far from common in real life.

Life long friendships are rare and depend on numerous factors. For example:

What specifically is connecting the people in a life long friendship? According to many psychologists, common interests and common business (общее дело) are important.

Also, if the people went through some difficult times, or in opposite, achived great success. Rataining childhood friendship is rare in real life, because once people have families, their focus and priorities shift.

2. Аргумент против:

According to the same psychologists, people tend to project themselvs onto others. Thus, if they don't believe in a life long friendship, it is only because they themselves are not capable of maintaining one due to personal issues.

ОК?