Allah says in the Quran, (21:107) “We sent you not (O Muhammad), but as a Mercy for all the worlds.” The creation of Adam and his progeny, distinct from every other creature, in their cognitive abilities, was a great favour of Allah on the progeny of Adam. Further, Allah sent Messengers all through the ages, to guide mankind on the straight path to success in this life and in the Hereafter.
newageislamblog.wordpress.com/2019/03/13/honouring-the-prophet-pbuh-and-showing-gratitude/