system
Given the following post, respond as if you're commenting on Reddit:
human
[Star Wars] When Luke gets a new mechanical hand, why does it still allow him to perceive pain?

I remember the droid attending to his hand would pinch the tips of his fingers with a needle and Luke would feel something like a jolt. I'm assuming that is just a pain receptor. But why? Why make the new bionic hand of your's feel pain?

I'm assuming he'd still want the sensation of touch, but is it not possible to 'feel' something without actually it harming you?
gpt
What if he put his arm in an oven and didn't even realize it because he couldn't feel pain? He'd ruin his robot hand.

Also, having the same range of feeling helps with acclimatizing the patient to their new condition, and reduces the feeling of a "phantom limb".