1).They wear really big shoulder pads. Because of this, they take up lots and lots of valuable walking space and even destroy doors. Do they not understand how expensive those are? There is also Titan-spreading. Titans wear shoulder pads so big that no one can sit on a couch with them. 2). They steal kills. Saint-14 is the worst offender. He killed thousands of Vex because he was selfish. Just think of his poor teammates trying to get a quest done? They got no progress when doing a Strike with him at all! 3). Everything they do gets someone killed. Zavala calls everyone to Titan: most people die. Sloan sends Fireteam into Archology: everyone dies. Titan pats Hunter in the back: Hunter explodes into thousands of pieces (actual lore btw... or is it?). Jolder has bomb: nearly everyone dies. 4). While Hunters are out in the wilds helping lost souls and uncovering list secrets and the Warlocks are studying the Light and finding new ways to enhance Guardian power, Titans just sit up on their walls, looking down on them like they’re better than everyone in the universe.