So you voluntarily choose to see the world completely differently, just so that you can buy bread? How is that a choice? It's force.
And some people choose different sexual orientations in their life, so how is it not a choice?
In both cases the discrimination would just force me to pretend to be something other than I am.
I understand that this is your dogma, yes. And I understand that you want to legitimize the things you want to force on people.
I don't disagree about color, but the way how you can or cannot force people to avoid visibly and openly living their political identity OR their sexual identity is exactly the same, as it is for religion. It's always outside force, forcing you to pretend to be other than you really are.
In both cases the discrimination would just force me to pretend to be something other than I am.