Everything you can buy you can get in SP.
No one cares about anything that you do or have.
The map is really just sugar coated pixels.
There is no Utopia lobby just waiting for you.
Any satisfaction gained from a long term goal only lasts a few seconds.
Every part of the game has been done 10x better in another game.
Most people just stare at the radar and fly at each other over and over until something happens.
No one cares about Heists anymore because everyone is loaded.
No one really cares about your created content.
There really is no reason to do anything
You can dress up a pig, put makeup on it, glue some wings on it and shove a rocket up its ass, but it still won't fly.