One of the reasons many of us return to Travian is the friends we made on servers. Good alliances choose their players carefully and you have to prove you are a worthy member.
In kingdoms I am more or less stuck with the people around me . Yes I can kick players out by attacking them but there is still a limit to the influence a king can have so you are limited to people around you . There are some ways one can work with this but you can still end up tied to people you don't want as king or governor .