I played it a few hours a week up until about 3 weeks ago. I just can't do the grind anymore, its pointless, and not really that much fun anymore. (For me, not others)
Bungie is way to focused on Marathon, and them killing everyones light level back down to 10 again just seems really lame and an easy way out for Developers.
This steam review pretty much sums it up for me:
HOLY JUMPING DREIDELS BATMAN! bungle is releasing a new DLC? AND the servers are going to be busted for at least TWO DAYS!?! AWESOME!!!! what's that? they're also rolling out another round of sunsetting, removing hundreds of hours worth of game missions, grind, activities, a handful of unique areas with narratives and quests, AND all the loot they contained, despite over FIVE years of negative feedback and complaints?? sounds like a BLAST!!! i can't WAIT to have to explain to new players about what happened in the Season of שקל!!
wait, say that again?! they're going to make nearly ALL of my armor and most of my guns OBSOLETE by POWER CREEPING them?!?? TAKE MY MONEY!!!! huh, there's more?!? bungie fired ALL of their good composers, so nearly 40% of the soundtrack is just REMIXES of songs we're ALREADY HEARD???? truly a MASTERCLASS in RECYCLING!!!! wait, you've got even more?!? you're telling me the new destination will have NO lost sectors, only THREE armor exotics on launch, in addition to neglecting gambit and crucible for ANOTHER year?? YABBA DABBA DON'T MIND IF I DO!!!!!! I LOVE GIVING BUNGIE MONEY FOR KICKING ME IN THE ♥♥♥♥♥♥♥ NUTS!!!!!!!!!!!!!