Alongside Quranic guidance; fear, shame, guilt, humiliation are natural and ingrained means of controlling human deviation from rightful path. Like an urge to get full naked in public is controlled by shame. Because it tortures sincere mind nobody normally does so. Similarly, illegal call of testosterone also has its shame and guilt but Mutah liberates itself from such control. So it is nothing but unlawful libido re-engineered by Moulvis to make it guilt free. Anything that promotes temptation but without its inherent guilt is deception.