I only managed to get a few hours in, but overall it's a resounding "meh." I honestly expected a lot more from Bungie.
The introductory cutscenes are nothing but cliches ("The Darkness"? Seriously?), and the voice acting is woefully uninspired. I was hoping it might pick up once the game actually got going, but no, the story continued to slide. "The Fallen", "The Hive"--I mean jesus. A far cry from "alien Covenant of religious fanatics bent on destroying humanity because fuck humanity."
Story aside (even though that's pretty hard to do):
Aesthetics are solid, I really like them--unfortunately, for the same reasons I like MS2013 and Windows 8 aesthetics. Those aesthetics are just too sterile to create an engaging world, and what's worse, the graphics look like sandblasted shit on my PS3. I'm not blowing money on a 5th-gen console just for Destiny or any other title just to get graphics, especially not when Bungie could have just done a proper PC release. I usually try to look past graphics, but when your game looks like ME1 did seven goddamn years ago, it's unforgivable. I gladly took the hit for Dark Souls II on the PS3--not a chance for this.
Gameplay is solid, but unremarkable. Better than Borderlands, if only for the fact that you have more than one proper ability. I like that headshots reduce the CD of your ultimate, and that the ultimate's power is proportionate to it's CD. Crucible is entertaining, but honestly, Halo 4's combat is still better (which is saying a lot.)
As it happens, I downloaded EVE Dust 541 at the same time, because it was free and I was curious--and Dust blows Destiny out of the water. It's free, has better graphics, won't disappoint me with it's story because it pretty much doesn't have one/doesn't care if you don't care, the combat is more engaging, there's a hell of a lot more customization, the tech trees actually give you reasons to specialize in things...and I've only played it for the same amount of time that I did Destiny.
I've noticed that some people aren't happy with the always-online bit, and even though it's not an issue for me, I do still agree with them. If you charge $60 for a game, then the single player must always be able to stand alone, "interactive world" be damned.
Seriously Bungie, you guys fucked up. You've pretty much squandered a lot of your reputation with me, for what one random dude's opinion is worth. If Destiny 2 is good, I might consider it just because you guys made Halo. But if it's terrible, then oh well--you've made your mark on gaming.