IMO this type behavior used to be only possible when upbringing as a child was beyond Godless, when children are raised to be this way used to be unheard-of. Sadly today children are born and raised to be self centered, demanding, and hateful in public schools with no mention of God or the scriptures. I fear the generation prophesied in the Bible are here and going to be an army of people well described in the Bible as last days generation for those parents that dont teach and raise their children in the Lord.
2 Timothy 3:1 But mark this: There will be terrible times in the last days. For people will love only themselves and their money. They will be boastful and proud, scoffing at God, disobedient to their parents, and ungrateful. They will consider nothing sacred. They will be unloving and unforgiving; they will slander others and have no self-control. They will be cruel, brutal and hate what is good. They will betray their friends, be reckless, treacherous, be puffed up with pride, and love pleasure rather than God. Always trying new false beliefs, but never able to come to a knowledge of Jesus Christ as the truth and the life.