Is to realize how flawed San Andreas was. It was and still is an amazing game (and my 2nd best core GTA), but half of the sh*t the fanboys here mention is pretty half-assed in retrospective. Trains, the draw distance, the sneaking, the forming gangs*, annoying girlfriends (f*ck you, Denise, you're worse than Roman), the very Gang Wars**, etc.
* they felt more like f*cking ride-alongs. Seriously, they took like 2 minutes just to kill a single cop. I'm very glad to hear they turned their lives around and became Stormtroopers for the empire, though.
** which were as annoying as they were fun - anyone not get all of the territories because of the stupid faint colors or because the last territory was so small that rival gangmembers wouldn't spawn unless a bigger neighboring territory was under their control? I can't count how many times I had to purposely LOSE my own territory just so I could exploit a gang war in that small-ass territory and finally take it over.
I mean, yeah, GTA V is not perfect, it's probably as flawed as San Andreas, but f*ck, SA isn't the second coming of Jesus, stop treating it like it is.