Being the only person in 3 straight crucible matches to not get anything. VoG Hard. Watching someone else get the Mythoclast and all they can do with it is dismantle it. Getting Last Word and Bones of Eao in your Nightfalls, only for them to be sold from Xur later in the week. Rampaging through Crota Hard only for the boss itself to throw everything at you (not downing when shield is gone, swordbearer getting shot by boomers, [b][i]CROTA JUMPING OFF THE BRIDGE TO CHASE THE SWORDBEARER[/i][/b]) and having to quit the run, only to try again later and getting Radiant Mats. Can't think of others