Why the Terminator Movies can never have a good ending!!!

[bendermac]

i'll wont go into the physics of time travel and if it's possible or not but we know for certain that altering the future is very dangerous. so why can the terminator movies never have a good ending? quite simpel. john conner is the leader of the human resistence and he was the first who stud up against the machines and in the future he beat them, well with the help of his army . he get's to know that skynet send a terminator back to 1984 to kill his mom and to prevend this he send kyle reese to find sarah and do anything to save her from the terminator. but he sleeped with sarah and out of this one-nigh-stand comes john. now sarah and john killing in t2 the t-1000 and the t-800 (arnold) get's melted too. so no machines can rise bla bla bla. in t3 we will probatly see why there is a part 3 and how john prevent the war finally from happing. but while doing this he kills himself. he does that because when the machines will not rise and skynet becomes not the ruler over mankind and john can't send kyle reese back to 1984. so he'll never exsist. confused? now you ask what da hell this is all about
did you saw the movie the time machine with guy pearce? yes? good. the big question in the time machine was "what if?" and the answer to that is also quite simple. if alexander hartdegen's (guy pearce) wife wouldn't die he never build the time machine and that's why he can never save her. you see the problem with the terminator movies? i hope you do but if not, well than i can't do anything to make you believe that it will not work or maybe you should take a look on back to the future and you might see it there