Sensual instinct is a blessing, if the living creatures were not given the lust, there would be no generation; all divine prophets, the infallible Imams, the saints, the scholars, the poets, the rulers, the philosophers were not before, and the commander of the faithful (peace be upon him) is the result of the marriage of Abu Talib and Fatimah bint Asad, the factor by which Imam Ali (A.S) came into this world has been the marriage of a woman and man, the very lust is a vital blessing and if it were not, no generation would continue to exist.
source : erfan.ir