That should be as plain as day to any sane person. However, the movement to make victims out of everyone was a fundamental fallacy of Liberalism. Thus people began to blame everyone else, and everything else, for their own misdeeds.
But James explains the progression of sin in his epistle (James 1:13-15; 4:1-3):
TEMPTATION--->YOUR OWN LUST---->ENTICEMENT----> SIN--->DEATH
Let no man say when he is tempted, I am tempted of God: for God cannot be tempted with evil, neither tempteth he any man: But every man is tempted, when he is drawn away of his own lust, and enticed. Then when lust hath conceived, it bringeth forth sin: and sin, when it is finished, bringeth forth death...
From whence come wars and fightings among you? come they not hence, even of your lusts that war in your members? Ye lust, and have not: ye kill, and desire to have, and cannot obtain: ye fight and war, yet ye have not, because ye ask not. Ye ask, and receive not, because ye ask amiss, that ye may consume it upon your lusts. Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the enemy of God.
Lusts are unlawful desires. But Christians can resist temptations by the power of the indwelling Holy Spirit.
The three primary lusts were evident in the temptation of Eve. While Satan was trying to deceive her, she was yielding to her own lusts. But when it came to taking responsibility, Adam blamed Eve, Eve blamed the Serpent, and the Serpent blamed God.