Soooo a little backround.

I was in the process of leveling 4 orc shaman to 70 (currently 40) when my IRL freinds on the server decided to re roll allince on blackrock. So being such a good little buddy i was i decided to follow because playing a game without your best buds isn't to much fun. So we rolled allince my 4 shamans are currently 68 there. Now there saying they are going back to there horde characters becuase their paladins bored them out to much. So now im stuck with a decision. level my 40 toons (what like a month more leveling?) or two more levels and im 70 but on a server with zero freinds. So community that i love so much. Spread some light help me pick my choice. If you were in my shoes what would you do. (Btw i hate alliance lol...)