There are many reasons why corruption exists. For some it's the easiest and most profitable way to go. Of course it does not help when those who are suppose to be taking the lead indulge themselves in corruption as well. Some because of their economic situation justify corruption because in their eyes it's whats getting them by. The more someone get's away with something without being caught the more prone they are to keep doing it. King Solomon once stated : "Because sentence against a bad deed has not been executed speedily, the heart of men becomes emboldened to do bad." - Ecclesiastes 8:11
Other factors that contribute to corruption are selfishness and greed. Selfishness helps those who benefit from corruption turn a blind eye to those who are suffering from it. The more a person keeps making, greed continues to increase. Again King Solomon wrote under inspiration in Ecclesiastes 5:10 - "A lover of silver will never be satisfied with silver, nor a lover of wealth with income."
The final and most fundamental reason corruption exists is recognizing who holds a strong influence here on earth. The bible states regarding Satan the Devil in 1 John 5:19, "We know that we originate with God, but the whole world is lying in the power of the wicked one."
Revelation 12:9 states: "So down the great dragon was hurled, the original serpent, the one called Devil and Satan, who is misleading the entire inhabited earth; he was hurled down to the earth, and his angels were hurled down with him". So wee see that Satan promotes corruption by those who are willing to carry it out. His influence is prevalent and this is why we see it everywhere.
But will there ever be an end to corruption? Visit www.jw.org and you can find out.