Quote Originally Posted by Kraco View Post
He didn't give a shit about others in the beginning of SAO and now he doesn't care if Sinon gets drawn into his mess, as long as he gets to enjoy yet another girl's company. He's still the same beater deep down.
I don't think this characterization is really fair. The whole point of being the beater was to take the heat off of the original beta testers.
He generally cares that other people don't die and he wants to help them out. However, he won't go out of his way to change his own plans.
For example, he wanted to bring Klein with him in the beginning, but Klein wanted to stay with his friends so Kirito left because it would've been too dangerous with all of them.
He stuck with the Black Cats of the Full Moon to make them stronger, but wouldn't reveal his true level because he thought it would still be safe.
Kirito let Liz tag along on an adventure even though it wasn't really safe because he thought he could protect her.
Kirito used Scilica to find the orange guild, though he also did want to legitimately help her.

In this case, Kirito knows Death Gun is targeting strong players, so anyone at the BoB finals would potentially be fair game. By sticking with a potential target he both increases his odds of reaching his goal and can protect her at the same time if need be. The situation is actually kind of similar Scilica's story, except Sinon isn't useless and there are a lot of potential targets.

Also, let's be real, what teenager wouldn't follow this around:
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