Mankind is not naturally a logic based organism. In his time with them he has not yet decided whether this means anything more than a character trait. Skynet believed it made them weaker which may be true to an extent but they have survived this long. T-800 has decided, on gathered data, there is something more complex about mankind that makes them valuable, and resilient, and it is why they will win.

"Correct. I was created on an assembly line by a complex machine designated Skynet. My series and model was created for infiltration and termination of mankind." He steps toward the bike. He's not a gentle creation but at least he knows what he is doing.

"Our CPU's were created with advanced learning program codes in order to better infiltrate the resistance. Skynet will realize this as a flaw as more of my series type joins mankind against the machines and will initiate our termination. I was reprogrammed by John Connor and sent back to protect his young self against a more advanced prototype sent to terminate him."