Destiny had a rough start but after some continued development, and a decent amount of time, I think it ended up being a pretty damn solid product that I dropped hundreds of hours into and made a lot of friends playing. I loved my time with the game, even if it wasn't perfect.
One of the biggest flaws of the game is the barrier to entry to be able to access some of the best content in the game - the raids and end-game content. Doing the raids with friends were some of the absolute best experiences I've ever had gaming.