70 is where the fun starts. Arena is what I like most.

Had to desperately pick 2 randoms for 2v2 last night and I rocked with my warlock 4-6 where 3 wins are 1vs2.

Need my XPS asap!

70 is where raiding content starts and pvp showdown starts.

Raiding content as in a big guild clearing raid bosses.

PvP as in acquiring that 1850, 2000 rating and show that you can PvP.

I'm a PvPer. And yes you might have those twinks and having fun bashing others at lower bracket but 70 is really where you show your skills. Get that 2000 rating and get your shoulders!