Are narcissists bad people?

I've dated 2 narcissists and i've also had 1 in my family and from my own experience i'd say yeah, they're bad people.
They don't experience empathy and they're deeply insecure on the inside which causes them to strive for constant perfection in order to get admired by those around them and they tend to take out their frustrations on those closest to them in forms of emotional or even physical abusive because when they get home they're so tired of pretending to be admirable and their lack of empathy makes it easy for them to treat those closest to them like trash instead of getting their frustrations out in a healthier way. They also tend to be very controlling for obvious reasons - insecurity, and they use guilt tripping a lot as a way to make you do as they say and so that you don't leave them but the truth is they don't get attached to someone from love like a normal person does but because they need a human punching bag close to them and someone who can make them feel loved but they don't know how to love someone themselves. It's the same with narcissistic parents - they put you down to make you insecure so that they can feel better than you, and to keep you feeling like you need them because you can't be on your own. That gives them a sense of power and self importance. Unfortunately in almost every case it's best to completely cut contact with a narcissistic person.

Narcissists can be bad people, if they ever tell you they have changed always talk to them in caution because a narcissist would go back on their old ways and never change.

For more context just for the people that may comment that being treated like a baby is like "getting everything you ever wanted and things done for you" it really isn't "spoilt" or being "entitled". I struggle with basic life skills because she always said "I wasnt old enough to cook for myself." Moving out was an endeavor in itself because she said I could when I was 18, then I turned 18 and she changed it to 21, just before I left she said, & I quote "you won't become an adult until 25". I dont think being an adult is something you can just switch on, but it certainly won't happen in an environment where a parent treats their kids like babies still. She undermines my decisions and makes me feel bad when I chose things not to her liking, even though I'm 21 years old!

I used to just go along with things to keep the peace otherwise she'd accuse me of things, verbally and (however rarely) physically assault me if I ever refused inappropriate treatment for my age.