Jesus what is up with the sudden GTA SA hate? GTA fans can't be happy over anything, for years SA was acclaimed as the best in the series, now as time goes people like the OP sees a good chance and takes all the time to sh*t on it.
NO, SA did not have unrealistic missions. What does that even mean? It's a damn video game for f*ck sake, not a f*cking reality simulator. Maybe people are thinking SA is a little over the top because of its age, but that's fine. Yeah it may not be on par on that sense and with most games and recent GTA's such as IV, but SA did not have ''unrealistic'' missions. If SA had unrealistic missions, then every single gta games have unrealistic missions. I could go on and on on every single little detail that each gta game has had which is unrealistic, but I am not gunna do that because I don't care. It's a video game, have fun with it. When a protagonist dies, he respawns at the nearest hospital in most GTA's. Is that realistic?
Give the game the credits it deserves for its age, it's still a cult hit contender all these years later and people in YT videos still call this the best gta game, while storywise IV is the best.