It's actually quite the opposite. Titans have a wide variety of things which make them arguably the most versatile class to combating situations on any planet and raid. Warlocks with self rez too? Sorry. I traded that for song of flame and simply never die... plus it's funny when doing a raid and someone says, "wait. How did I get my grenade back that fast?" "I'm a warlock who plays like a titan. Strong, fast, and doesn't die."