Sexual desire can very difficult to control and regulate. Even more basic needs like hunger and sleep can be more easily overcome.... and even if we indulge, they rarely lead to wrong doing.
Sexual desire is not so. Uncontrolled sexual desire can easily lead to multiple partners, promiscuity, perversions, child abuse, sadism, rape and even torture and murder. Most such abnormal and criminal behavior can be traced to sexual causes rather than other needs. They can also lead to abortions, unwanted children and such other.
The difference between a need and a desire is the mental element. As long as it is physical, it is a need. But when the mental element dominates, it is desire.
Animals have needs, not desires because their mental component is minimal. It is sexual desires that can lead to many of the abnormalities and criminal offences that I have mentioned above.
This is why unregulated sexual desire is often equated with the devil.