In The Name of Allaah, The Most Merciful, The Bestower of Mercy.
Allaah [The Most High] said:
لَقَدْ خَلَقْنَا الْإِنسَانَ فِي أَحْسَنِ تَقْوِيمٍ
ثُمَّ رَدَدْنَاهُ أَسْفَلَ سَافِلِينَ
إِلَّا الَّذِينَ آمَنُوا وَعَمِلُوا الصَّالِحَاتِ فَلَهُمْ أَجْرٌ غَيْرُ مَمْنُونٍ
Verily, We created human being of the best stature [mould]; then We reduced him to the lowest of the low, save those who believe [in Islamic Monotheism] and do righteous deeds, then they shall have a reward without end [Paradise].
[Surah at-Teen Aayaat 4-6]
Allaah created the human perfectly with different body parts and organs, and did not leave anything the human needs – externally and internally; but despite all these great blessings which necessitates that they show gratitude to Allaah, the majority of them are not thankful; rather, they are preoccupied in play and [blameworthy] amusement. Indeed, they bring themselves to the lowest level through deeds that degrade one’s manners, therefore Allaah will reduce them to the lowest of the low – the lowest part of the hell fire, the place of the disobedient ones and those who turn away from their Lord. The only ones who will be saved from this [evil end] are those whom Allaah has blessed with Eemaan, righteous action, virtuous and lofty manners.
[Source: An Excerpt from ‘Tayseer Al-Kareem Ar-Rahmaan Fee Tafseer kalaam al-Mannaan’. Slightly paraphrased]