here's thy they should be quitting

Because we're f***ing bored. The loot system suffers from being designed to artificially prolong gameplay but fails to deliver any worthwhile results in most cases. Grinding for rewards is tedious and a lot of times the weapon drops aren't worthwhile. Vendors never refresh with different gun rolls, either, so the chance to buy something awesome seldom comes around and only adds to the feeling of stagnation. There's no aesthetic customization options outside of shaders (some of which require insane grinding of factions with no guarantee of a drop) so any sense of character individuality is gone at endgame levels. My level 32 hunter looks like every other 32 hunter, with the exception of "what Iron Banner gear am I using instead of Crota gear?" to change my looks up. This is compounded by having to wear faction items instead of any of the collection of legendary cloaks I like to buy. I look and feel like a clone. Meddling developers shit on player progress with asinine weapon balancing going on constantly. The auto rifle nerf basically made the weapon class garbage-tier, so anyone who sank time and materials into maxing them out are basically sporting paperweights rotting in a Vault while being railroaded into using whatever Bungie's pet weapon class at the time is. The development team's incessant meddling alienates the playerbase further by posting updates with an air of playful, condescending bullshit with each new installment. It becomes clear that they do not listen to their community whatsoever, and fallback heavily on their mantra of [b]"That's not how we meant for you to play."[/b] Raid cheeses and exploits are hunted down and patched with stalwart, uncompromising efficiency but game breaking problems like Raid boss fights acting crazy are never addressed. All of these problems take place across an underwhelming amount of content for a AAA title, also. This is even moreso the case if you're an Xbox player, where you'll also be without several Strikes, and numerous weapons and other equipment. The game just isn't very fun, and the grind isn't worth the effort. And the unpredictability and lack of foresight of the dev team always has the potential to f*** over whichever weapon class I'm most fond of, based upon arbitrary numbers over genuine player feedback. House of Wolves will either save this game, or it will be its coffin nail.

As others have hit on: 1) Major lack of content at this point. Our "endgame" doesn't really exist. We have 6 washed-up strikes (8 on PSN) with no difference between them in the loot you get, just aesthetics. And let's be honest: not challenging, no skill required. We also have 2 raids, the first of which was pretty cool, the second of which was not. That's it. 2) Destiny rewards casual players. After you do your weekly stuff, you're done till reset. 3 nightfalls, 3 heroics (only if you're hurting for coins), 3 gorgon CPs, 3 Atheon kills, 3 Deathsinger kills, 3 Crota kills. This will take you maybe 3 hours max for everything. After that, the rewards dramatically taper off, and there's no real reason to keep playing. You could grind strike playlists for a 1% exotic drop chance every 10 mins of playtime. 3) Xur. People know they don't even have to farm cuz Xur comes with additional free stuff each week, provided you can spend 30 or less minutes per week getting coins. You do your weekly stuff, spend a few hrs every week and you get everything Destiny has to offer in this current RNG system. No way to target specific drops. Maybe collect a few bounties here or there with telemetries to add an hour of playtime here or there, but that's it. All these fancy toys to play with, nothing to use them on. All dressed up, nowhere to go.

Deej confirmed Ghorn sale in interview on YouTube. Maybe they will come back for the horn. Excited for the horn to drop.