So is crucifiction a bad or a good thing?

[Wyrd of Gawd]

What exactly was god's plan? Since he's immortal and eternal by definition to engage in some S&M action by letting himself be crucified?

I know, I know.  There will be some knuklehead barging in here, saying, he allowed himself to become mortal. But since that same person will also claim, there hasn't been a single moment when there was no god and all three are actually one, there's a moot point if I ever seen one.

So, don't talk about the action of crucifiction here, talk about it not making any sense in lights of the trinity. And, it's not as if we haven't been there before.

The point about the crucifixion is that it's an excellent example of complete belief and obedience without exception.  That example is so ingrained in our psyche that you yourself would sacrifice your own life without a second thought to save someone else.  You can call it self-sacrifice or altruism but it's based on the idea expressed in John 15:13 (CEV) =
"The greatest way to show love for friends is to die for them."  

That's actually one of the most common movie tropes.