If the kids had stayed behind in the Temple, they would have been killed by MIB along with everyone else. MIB didn't care about anyone that followed along with him.
I agree that they would've been killed if they'd stayed behind. But then why did he make the offer for anyone who wanted to, to come with him? Why didn't he just leave them all in there and kill them all? Why give them a chance?
I know you guys will laugh me off the face of the earth, and that's perfectly OK, but yeah, I
can see him taking the kids on the boat with him to leave the island. If they'd still been there with him, I can see it as a possibility. Would he risk losing his one-chance-in-a-thousand-years-at-escape to go back and look for them to bring them with him? No, I don't think so -- as you said, escape was his primary goal. But if they'd been there with him, yes I think he might've taken them along.
Yeah I guess showing the world as we could see it crumbling away is not a good enough indicator as to what would happen if the light went out.
Nope! Not for me!

To me, it showed that the Island was collapsing, but I don't see where that means that the entire world as we know it would collapse also. But your sarcasm is duly noted.
