I have a lot of gripes with the game like many people if I'm being objective but I gotta say...
Destiny just might be the best FPS I've ever experienced. I think it just comes down to mechanics/variety/investment.
Many other great FPS have 1-2 of these traits but never all 3. Battlefield 3/4 had great mechanics and variety but lacked the investment I have in Destiny.
Halo and CoD also with great mechanics
I just think the total package that is Destiny is what keeps me coming back.
Even once I have the load out I desire I still love playing crucible knowing there won't be any rewards most likely.
It's just fun to play.
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Based on the things you're taking about, is say boarderlands, by far. But for third person, I'm going with the game that set the model for all future fluid cover-based combat. [spoiler]Oh gears-i-poo.[/spoiler]