THE 38 WAYS TO HAPPINESS: Do not associate with fools II
Everyone born into the world has the greatest of intentions to live a decent life no-one wants to make a mess of their lives. Even a criminal doesn't particularly want to live his life dishonestly, but he thinks that being a criminal is good enough it's a good shortcut in earning one's living thus why not be a criminal. Having become a criminal. it is only later that he finds out that being a criminal is no good, but by then it's too late he can't change his mind or his life and ends up being a criminal for the rest of his life. Thus you can conclude that although everyone would like to be good, not everyone manages to live out their wishes.
Buddhist Teaching