Yep, the missions in FS involve going through hoops, some involve landing planes in storms. Could call it repettitive, but then GTA is, going around driving/shooting people, same in CoD, going around achieving objectives. Some of them you don't even start at an airport. All the non-arcadey missions have a story in them. Plot!? Sims doesn't have a plot, and thats a game.
So it Gran Turismo 4 not a game? Is Sims not a game? Is forza not a game? Is LFS not a game? All simulators...
FS isn't a combat game, I bet in Wing Commander you had basic controls took off, fired some missiles/guns did some dog fighting/bombing then landed or have the game stop you while still in flight. At-least FS-X has some ending to it.
Have you even played FS-X? Have you looked at the key settings panel? Half of the settings arn't even binded to anything! The ones that are all the basics needed to fly a plane, then some to change the views! Thats it!
It all comes down to what the person wants it to be, 50% of people buy it as a game, as in, to have fun with. I have fun in it, therefore it is a game for this person.
Then we have some people buying it to train themselves in routines when flying, actual pilot use FS to test themselves, others who don't fly in RL, fly it by the book because its as close as they can come to it. Due to base FS limitations, they buy add-ons to get it as close to the real world as possible, but it can only go so far because it isn't anywhere close to a gooder simulator as the boeing ones or the Concorde one I will be flying! For these people, they bought it as a basic simulator.
It can never be a proper simulator, for a kick off it doesn't even have a ground effect, you can try it yourself, just do a gental slope towards the runway at a steady speed and you will continue towards the ground till you hit it, in real life, you would encounter the gorund effect which would slow your descent which then gives a softer landing. There are no realistic crash effects, turbulence from other planes doesn't exist, ATC is basic at best, AI is basic, physics, at best is ok, plane controls and damage is limited to single whole systems, fuel and CofG calculations even in the best add-ons is basic. Need I go on????
In no shape or form in its base config is FS a proper simulator, no hope in hell.