Sort of is tho. It might give you the false impression that the good guy wins in reality too, which couldnt be any further from the truth. It also teaches kids that there is a greater power that will eventually save them, which again is not going to happen in reality most of the time.
Dont know that so idk...
But yes, i think showing what its like to lose is important. It gives people all the more motivation to fight back if they are ever met with a choice in life.
I think one of the reasons I liked Rogue One was that it's "win condition" wasn't "every one lived happily ever after". although I will say, if you have enough time to find a beach and make out, you probably have enough tome to find a shuttle, or something.
(the other reason I liked Rogue One was Alan Tudyk as K2-S0)(okay, actually, that's why I loved Rogue One. Sue me.)