وَمِنْ ايَاتِهِ أَنْ خَلَقَ لَكُم مِّنْ أَنفُسِكُمْ أَزْوَاجًاAnd among His signs is this that He created for you wives from among yourselves,meaning, `He created females of your own kind, to be wives for you.'لِّتَسْكُنُوا إِلَيْهَاthat you may find repose in them, This is like the Ayah,هُوَ الَّذِى خَلَقَكُمْ مِّن نَّفْسٍ وَحِدَةٍ وَجَعَلَ مِنْهَا زَوْجَهَا لِيَسْكُنَ إِلَيْهَاIt is He Who has created you from a single person, and He has created from him his wife, in order that he might enjoy the pleasure of living with her. (7:189) This refers to Hawwa'. Allah created her from Adam, from the short rib on his left. If Allah had made all of Adam's progeny male, and created the females from another kind, such as from Jinn or animals, there would never have been harmony between them and their spouses. There would have been revulsion if the spouses had been from a different kind.وَجَعَلَ بَيْنَكُم مَّوَدَّةً وَرَحْمَةًand He has put between you affection and mercy.Out of Allah's perfect mercy He made their wives from their own kind, and created love and kindness between them. For a man stays with a woman because he loves her, or because he feels compassion towards her if they have a child together, or because she needs him to take care of her, etc.And Allah reminds:إِنَّ فِي ذَلِكَ لَايَاتٍ لِّقَوْمٍ يَتَفَكَّرُونَVerily, in that are indeed signs for a people who reflect.