I actually have. Mind I don't have a problem with the word in particular but I've read it used as a slur on the Internet and in real life.
It's all about intention imo. Many people use it just to clearly communicate but some also use it with hatred.
It is not. There are many queer people that were wronged by society. It is understandable why they would have hatred in their hearts.
But I guess I'm just a liar on the Internet. Have a nice one.