The fact that they are uninvited would be reason enough not to welcome them. I work with college students, and they have questions about homosexuality. I could say to them, you are not allowed to discuss homosexuality in my house, but how has that helped them? Would it not be better to explain and to discuss with them my views on homosexuality, and why I believe it is immoral? I know what I believe and why I believe it, but maybe some of those that read FR are not so certain about the issue. Perhaps FR should post a list of topics that are not allowed to be discussed as a courtesy to those that post, read, and support FR?