One might hope that a married priest would not be subject to such inordinate sexual desire.
In the beginning man's will ruled his passions and animal urges. After the Fall both the will and the intellect weakened and man became a slave unto his passions. 
God in His infinite mercy offered a way out of this slavery. He became man and offered Himself in reparation for the sinfulness of His rebellious Creation from the beginning of time until it's end upon the Last Day.
The path to Salvation was never meant to be easy. Man is unique in the universe, finite in his spell here yet infinite in the 'mind' of God. His gift of free will enables him to make choices; whether to follow the path of righteousness taught by Christ's Church or to ignore Christ and follow his own particucular desires.
Which path he wilfully chooses will determine his fate on the Last Day.
Do you really understand what it means to be a Catholic?