I don't want to be denied a job, healthcare, education or a home loan because the prospective employer, provider, school or loan officer at the bank merely thinks I am gay. I would not openly reveal my sexual orientation to a prospective employer or any of the others I mentioned anyway because it's none of their business in the first place.
Before the Civil Rights Act of 1964, women were heavily discriminated against, blacks were heavily discriminated against, Jews were heavily discriminated against and Catholics were heavily discriminated against and this Act has protected those human PEOPLE since the mid-1960's.
LBGT are human PEOPLE too and need equal protection under federal law against redneck hillbilly state mentality.
It's not about creating a new protected class just for the sake of it, it's about protecting all humans equally.
This redneck peckerwood Lankford, had he been a Senator in a Southern state in the 1950's, might have sported a Klansman hood and a hang rope. He might have burned black churches and beat up black people. He would have probably been pro-Jim Crow and wanted to keep black people at the back of the bus and out of "white" drinking fountains.
I still wrote this man out of the principle of being an American. I was following my conscience.