By some standards, Luke is a truly terrible Jedi. He loves without reserve, he throws himself into things without thought for 'neutral' but only for what is right, he cares too much, he's impatient, he's got a temper...

Yoda told him there was too much of his father in him. But he's still here.

His hand goes to his wrist, rubbing it absently. It's a more singular spot than the damage left by the Emperor, something that he can soothe (it's a placebo effect, he doesn't care) with touch. "I lost my hand to a Sith. And my lightsaber. Father's lightsaber."