The third you prefer why waste you're time playing classes you don't enjoy, the point of video games is to play for the enjoyment if you only enjoy playing a hunter, warlock or Titan then go ahead and do it.

All of them are fun. The only difference is the supers, grenades and melee. You use weapons as primary on all classes. Its a first person shooter and it makes no sense to dislike a class because it doesn't have golden gun or shoulder charge or an ability of another class.