I agree that a land's society can continue to move forward with out an alliance. But that is because the current views of what an alliance is has changed from what it once was. For better or worst. An alliance is suppose to be a symbol and a focus of the ideals of a group. Though this can be represented with out the physical badge... with the changing of times people have started to or have been seeing the alliance badges as meaningless (this is used generally and from what I have noticed of others).
Alliances have started to lose their meaning in several ways: inactivity, lack of direction, public connection, and/or takeovers/lack of response to takeovers.
That is a general overview not all alliances have all of that list, some have a few, a mixture, or none at all. I leave that up to people's opinions. Inactivity because of rl is something we all deal with but that is not what I am speaking about when applied to alliances. What I mean is that some alliances do not have much of a presence in MD even at peak times of activity. Lack of direction, is that some join alliances but then it is just a badge, there is no goal or forward movement. It is just there. Public connection, in that alliances do not interact with each other as alliance members publicly... there may be behind the scenes interaction, but people do not see the interactions or can participate in the interactions. As for the takeovers there is a few points to that... In my opinion, takeovers are currently damaging to md at this point in time because people are 'tired' of it happening and no longer have the will to fight back. It is part of this response to take overs that leads to the lack of caring if the alliance is taken over. But because of all the takeovers the land's social structure still exists, because it had too. I am not saying anyone is in the wrong I am pointing out weak points to lack of caring and the takeovers, do with it as you will (general you, as in all that apply to this situation).
I have found that overall I do not like being in an alliance, the alliances of today are too stagnant or limiting for me. I prefer moving forward, to do something, and not have to ask permission to run with an idea... a storyline, or to create a form of chaos myself.