Every class has too much something that i don't like, so i don't have main.
Elementalist: Low Hp, Sometimes hard to stay alive.
Mesmer: Purple color.
Necromancer: Slow. Harbinger fix this but lose survivability, blight effect lowers HP.
Thief: Low HP, Daredevil is forgotten, Slow specter shroud auto attack.
Engineer: Color of that golem.
Ranger: Some pets i like are not good.
Warrior: Somewhat boring.
Guardian: Low HP, Radiance trait line. It's too good so you always take it, seems to be always condi class because burning.
Revenant: Utilities are legend locked