Bigger guilds come with all sorts of level-differences, and we happen to be a fairly big guild - so, of course, that includes us as well.
If there isn't anyone around your level, find someone within the level-cap or party up with people from other guilds. The thought of partying only with guild-members is nice, sure - but it won't do anyone good.
It's always rewarding to have connections outside the guild as well as inside.
Take it from me, I barely even stop at connections within AoL.
All babble aside; my point is to expand your views.