The sole reason for all the above incongruities is that people have forsaken the Qur'an and Hadith, and exercise their own judgments in the matters concerning Shari'ahby applying their own intellect, pursuing myths and superstitions, and trying to justify their erroneous customs and traditions by presenting insubstantial evidence.
If they had the knowledge of Qur'an and Hadith, they would have known that even the pagans among the Arabs used to employ a similar kind of argument before the Prophet (Peace be upon Him). Allah's wrath befell them as He declared them liars in one of the Qur'anic verses:
{And they worship besides Allah things that hurt them not, nor profit them, and they say: 'These are our intercessors with Allah.' Say: Do you inform Allah of that which He knows not in the heavens and on the earth? Glorified and Exalted is He above all that which they associate as partners with Him!} (V.10:18)
*Translation and interpretation of the Qur'anic verse provided for context.