OK so you don't like the friends thing but it's more than grafitiing the four buildings- visiting friends is for the benefits that you get from the holiday updates and now the FP bonuses. That's in addition to the money and XP you get from the actions which piles up to about 2,500 XP and $25,000 or $9,000 and 810 FP PER DAY.
If you have a problem with visiting friends then don't visit them and don't accept invites just play solo but you are missing out on a chunk of the game.
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