Allah respects the grey haired Muslims. It is an authentic tradition that one must treat youngsters with affection and the elders with respect.
Imam Ja’far As-Sadiq (as) has said: One who reaches fifty years of age will have the accounting easier on the Day of Judgement. One who reaches sixty years of age, even the angels will be friendly towards him. One who touches seventy, his atonement for sins will be accepted. Allah will order the angels to record only the good deeds of the person who reached the age of eighty years. One who reaches ninety years, all his past sins will be pardoned and even the sins that he might commit later might be forgiven.He will be listed in the group of Allah’s captives and will intercede on behalf of his kinsmen on the Day of Judgement.