You want to be the bad guys, robbing from the rich and the poor and everyone in between except your own tribe and tribal alliance (and sometimes even them!) and that's great. Game worlds with this pvp element need you, at least to a certain extent, otherwise it's boring. But the predator to prey ratio is way out of whack in every ffa pvp game I've tried. There are way too many of you, and instead of fighting each other, you 'play politics' and gang up to more swiftly and efficiently crush everyone else in the game.
Sure, your victims will rebuild if they lose something sometimes or even everything once in a great while to a tiny handful of roaming predators, but when a big chunk of the game's population is out killing and destroying, your tree chopping, skinning, and crafting crowd is going to go play something else or join your bad guy crowd, thus further depleting your prey.
And the 'politics' people talk about in these games just boils down to plotting with your fellow predators to gang up and crush your enemies in a nice, uneven 10 to 1 battle.
Politics are also a bit about finding and persuading other players to become in house crafters and gatherers to supply the predators with fresh gear when they happen to lose a battle, which gets very boring and confining for the crafters and gatherers very quickly.