The world has no dimension but the material kind. The only rational response to the forces of nature and of human civilization was to attempt to dominate them rather than be humbled by them. If there were no spiritual side to life, then there could be no such thing as love except in the mind of fools; for love is a stae of spirit, not of flesh. In a view, tenderness has no place is a sexual relationship.
At its best, sex is a chance for the dominant person to express control of the submissive partner. The fierceness of the dominance and the completeness of the submission leads to satisfaction of greater intensity than love could provide even if love existed. Because PLEASURE and POWER are synonymous to one another, the intensity of satisfaction is directly proportional to the cruelty to which one uses their partner.