CA- Millions of Christians have been able to extract the teaching of 'Love your neighbor as yourself' and apply it to their lives and community. What is wholly unacceptable from a humanist perspective is the very obvious theme and claim of the Christian Leader and God along with the demand made by that leader to his followers for world domination and subjugation.
Think of this in the same way you may object to the claims of Islam and its God for world domination and subjugation. Individual Muslims have and do contribute to the good of society and the welfare of all but this central tenant of Islam like Christianity cannot be ignored and is simply no longer acceptable.