(415 words ): Respect towards grandparent and elders have been a judgemental subject from ancient time. Someone says respect should be earned. Someone believes that respect cannot be given freely. Contradictions among the people born from individual's nature and behaviour. In this essay I will state very simple logic to clarify the misconceptions and I will put a better solution to avoid argument of contradictory thoughts regarding the subject.
Respect means well-behaving with other with good gesture, moral, gratitude and feel good sense. Respect is counted upon honesty, truthfulness, goodness, magnanimity, behaviour, moral, character, integrity etc of a human being. If someone exhibits these values fully or partly then he is a respectable person. We expect these values in public to respect someone. But when we take the example of our parents and grandparents then we generally don't apply these conditions. We blindly respect them as they brought us in existence and because they are our elders in family tree. If a person other than our family is asked to examine our family members in public sense then he might find out some or many inhuman values.
Therefore it is clear that there is a role of selfishness. An Ideal human beings is that person; who comes above these judgmental thought and showcase his goodness in public to prove his values and culture at best. Therefore every elders and grandparents should be respected because they are seniors in our society. But it does not mean that you respect an elder who is out of human sense. Never respect wine drinker, addict, thief and bad elements of the society even if they are your family seniors. Because they reduces the values, cultures and integrity of our society. I think you all understand what I mean here. If anybody want a certification for this logic then the law of creator is to be followed, and these laws are available in religious books.
One thing can be stated that respecting others breeds values for those who respect others. Thus he creates his own brand as gentleman in the society. These types of people have higher success rate in our society as they only have friends. They used to say that 'everybody is my friend, some are good friends and some are very good friends'. They don't believe in creating enemy.