Does anyone here still play Destiny?

If so I would very much like your help. I played the absolute trout out of that game when it first came out, and really loved it. I used to farm Vault of Glass both normal and HM weekly, and managed to hit level 30 about a month or two before the first expansion/dlc hit. Unfortunately, I got really bored once I hit 30. I would still play some pvp, and the strikes were alright, but a lack of friends playing the game coupled with a feeling of just waiting for more content drove me away.

ANYWHO! Now I have the urge to get back into Destiny, but have nooo idea what I've missed up until this point. I have a level 30 warlock with what used to be some pretty sweet weapons, so if any of you kind people who still play could give me a run down of the state of the game right now, what I should expect when I put that disk in the tray, and maybe even run me around some of the new missions that would be awesome. Also, how much are the new dlc's?