And some people want to pvp and war, they want to invade towns and the peaceful mechanic makes it more difficult
Don't forget that some people want to kill other players for stuff they've done, but can't because those players don't go into wild and their towns are peaceful so they cannot kill them in a siege
Don't forget that some people want to kill other players for stuff they've done, but can't because those players don't go into wild and their towns are peaceful so they cannot kill them in a siege