You will cry...That you were spoiled that Arnie is the good guy
Note-The movie was set up that a different Arnold was hunting John Connor. Well surprise, surprise. Arnold is the good guy in the sequel.
Sadly, this was world's most open spoiler to the world. All the advertisement and promotions didn't hide the spoiler. Say what you want about Vader being Luke's dad but people didn't talk about that spoiler till after people saw the movie in 1980.
Here's the trailer if you want to see
Note#1- Actually Arnold was…eh sort of. It was a look-alike bodybuilder with CGI on his face. That was coolest part of the entire movie.
I seen people believe the movies can’t go without him and whines about it. *rolleyes* Terminator is suppose to be about Humans fighting machines, not Arnold. The franchise can go without him.
- In the 3rd movie, John learns he dies in the future from Arnold. Having future knowledge, he can prevent his death.
- The original ending to Salvation had John died but Marcus(the cyborg) will wear his skin to pretend to be John since he is a symbol to the resistance. It's a shocking twist but John Connor will still "live".
- He becomes a Terminator in Genisys. However the timeline is heavily altered and Sarah and Kyle can conceived a new John and raise him to fight a new Skynet that Matt Smith will create in some never made Genisys sequel.