Dust 514 is specifically a "MMO/FPS Hybrid". (as defined by CCP itself).

There are traits that many MMOs share that Dust does not yet have; Specifically, PVE content, and lots of non-combat sets to explore and handle out-of-battle errands on.

MMO traits are currently on the back burner.
FPS traits are the primary focus for now.

Right now, development is focused on the PvP FPS balances and mechanics, and rightly so. Because in the long term, making sure THAT is properly balanced is what will ensure Dust's survival.
You need not look any further than the Feedback/Requests section to recognize that many things related to this need more tweaking.
Once the PvP and FPS aspects have been ironed out, we can move on to installing the PVE MMO elements that you so crave.

I highly recommend that you DO NOT abandon the game for six months, as EVERYONE'S input on the development of Dust is important to the process.
The more input and support Dust gets, the faster development will move along.

It's important to recognize, that as you play Dust 514 in its current state; you are a TESTER first, and a PLAYER second. You are a beta tester. If you focus on just being a player, you will quickly recognize you are playing an incomplete game.
Try to be objective on your view as a whole.

(Been playing online games for 14 years... boy do i miss the days when people understood what a Beta was... Imagine what they would say if they were Alpha testers!)

Whom ever Labeled this game as an MMO needs to actually play an MMO! It's just a very poor FPS! Frustratingly bad! Spend hours buying equipment for your character to have them taken away in the blink of an eye as you coninuously keep respawning in the middle of enemies without firing one singlr round of your new weapon! Fantastic waste of time, no wonder it's free!!!