Lost in the Truth of the Lie

Ever have I said that lying is not wrong in fact I went forth to say that the lying can make life easier and its actually good it makes life less confusing.
I even said there are two types of lies and like every thing else a lie may me used or abused, it may be good or bad depending upon the liar.
According to me the deciding factor if a lie is good or bad was the motive of the lie in other word the reason for lying or as I like to call it the truth behind the lie, thus a lie could be good if the reason for lying is a righteous one.
I wish I could agree to that now but I can’t and if I do I would be lying and the truth of the lie would be to portray that I was not wrong and to ease my conscience and thus I would be lying to my self, yes not a very noble reason catch 22. I have often put forth a hypothetical situation to justify lying, now i use the same one to discredit it.
A situation like – if u were a surgeon about to perform a surgery wherein the patient had 90% chance of dying, and the man about to go into anesthesia looks up in to your eyes and ask if he will die, would you lie? 3 monts back I would say yes I would lie to hive him hope, but now I cant say that because the hope I would give to him would be a fools hope, and to give hope to a desperate man is dangerous. Hope can drive him crazy it can make him dream and then in a blink of an eye that dream can crumble into dust, no I would not want to lead some one right up the cliff only so he can fall to his death.
To lie and give hope seems good the, reason for lying is good, the means may be wrong but the result will over shadow it; but what if the result is not what u desired? Then the lie be wrong? What if that hope drives him gives him liberty to dream and then the only hope he had was false and his dreams crumble in to dust.
What would be better the harsh truth or false hope?
I went a step further and managed to lie to myself and I believed that lie I became a part of it and I gave my self hope, a hope that a dream would become real, but all that hope rested upon a lie. The lie which was me.