He really is fucking weird, isn't he? Take the hospital scene, as soon as they state loud and clear they won't let him meet Zero Tsu it's like a switch in his mind was turned on and they went from "people I know and somewhat like" to "obstacles". He doesn't protest, he just silently accepts that fact and goes from there. I'm convinced the only "real" people inside his head are him and 02, and I'm willing to concede that because he explicitly said they are exceptionally similar and he loved not being alone.
Even when he's willing to die to save someone, his thoughts are never "I want them to live", but "I want to be useful", as evidenced by his death door's dream in 6. He's self absorbed, incredibly so, even when he's being utterly selfless. What the hell.