I'm writing a fan fiction and I'm trying to be objective about Klamille, I want to write a love confession by one of them (Think Delena 4x23), so I've been racking my brain looking for what Cami would actually get out out of a relationship with Klaus and I can't find anything not to mention I find Klamille fan fiction yawn worthy so that's out as a source. I've even looked at his other relationships throughout the show to see what besides love they would get out/got out of a relationship with him based on what he's done and said to them.
Hayley, he got the wolves to respect her as their leader/"queen", he would likely promote her to being an actual queen, Klaus helped her hunt down the missing werewolves, she would be with the father of her child and someone who understands her wants and needs as a hybrid.
Geneivieve got close enough to him to create those moonlight rings and if she hadn't been such a back stabbing bitch they might have managed a real truce between rhe witches and vampires.
Aurora finally had someone who understood her and loved her.
As for Caroline she had someone who put her needs first and offered to and absolutely wanted to show her the world even to the point of promising to wait "However long it takes" to be with her, she convined him to help her and her friends and sometimes he even did it with out her asking him to, he forgave his enemies (Tyler and Katherine) because she asked.
Cami so far hasn't got anything out of her "relationship"(Not thier friendship) with Klaus. He claimed "What's important to you is important to me" but instead of killing Aurora he bricked her away knowing there was a chance she could one day get out.
So please anyone who understands why besides having feelings for him would Cami want to be with Klaus because lets face it as great as love is it can't carry an entire relationship.