Board Thread:Introductions/@comment-26897634-20150816221048/@comment-26282536-20150816233415

I agree. It kind of feels like it was there just to create a plot point, just like how the CG conviently keep forgetting about all of the different methods they could use to catch Peridot. In Full Disclosure, Steven states that they were "stumped" and would have lost if it weren't for Lapis. That's completely untrue. However, there is a logical explanation for this.

Lapis had nowhere to go. She hates the Crystal Gems (minus Steven) and the Earth, and Homeworld is barely recognizeable to her. She couldn't just kill herself, either, because Steven would heal her. So she decides that the best thing to do with her life is to imprison Jasper for all eternity, which allows her to both repay Steven for his kindness and give one of her captors a taste of her own medicine. It makes sense from Lapis' point of view, but is also extremely selfish of her considering how dangerous Malachite could become (according to Garnet)

Steven probably just assumed there was a good reason why Lapis made that sacrifice, since he knows that a lot of situations are too complex for him to understand. He wouldn't consider that Lapis did it for a selfish reason. He's too idealistic, and so are the people who think Lapis can do no wrong.

That's my theory, anyway.