there is a difference between acting nice and being kind
There is a big difference, and it's got me into trouble my whole life. Overall, I'd say I'm a reasonable person. I'm kind, but I can be nasty to people I dislike.
I have always been extremely polite, well mannered, and well-spoken. I smile a lot, and look friendly. It's not an act, and is just the way I appear. It does not make me a good person though.
As a child, my parents were always praised by other adults in the village for me being such a lovely polite child. Many adults wrongly thought I was great. Others saw that I was every bit as bad, if not worse, than my peers, and assumed I was putting on an act. They hated me because they assumed my politeness was an act, and they would tell me. I would happilly swear at them, and tell them what I thought of them.
If I had been like the rest of the children, and not been so polite, the adults would probably never have had an issue with me.
I was unaware of this until I was an adult, and a friends parent told me about it.
It's very possible to appear rude, but be a very kind person. I am proof that it's possible to appear lovely, but not be a great person.