Is there a reason not to be in an FC? No VoIP and DF only I can understand, but all that aside, being in an FC helps casuals.
Reason? FC buffs are purely beneficial.

As a casual, you should look to join an Fc. If you don't want to talk to anyone in the Fc, ok- just filter them out so you don't see their chat. (I personally love FC/LS chat, but to each his own).

Anyway, with that aside, most casual players with no VoIP that I have met, have relic and turns 1 and 2 on farm. I'm guessing they are farther then that, but since they are casual, I don't see them on often