[Jesus sits on a rock, speaking]
A new command I give you:
Love one another
[an angry character talks back to Jesus]
What if they’re something bad like gay, trans, brown, or communist though?
[Jesus is facepalming on his rock]
I don’t want to be a messiah anymore
This by itself is a problem, because people need to be taught aspects of morality, and this is absolutely one of them.
LGBT is an oppressed minority, and not teaching that LGBT is OK, is failing to help LGBT people against bigotry whether it’s from Christians or not. The fact you even mention cohabiting people is astonishing, as if there was any reason whatsoever to be against it!? It is not the bronze age anymore.
This is one of the absolute worst teachings of Christianity, that you are born with sin inherited from previous generations, and you need Jesus Christ to help you with that.
No you are promised to be “saved” by being a faithful mindless sheep.
This is just the ignorance that can be expected from a religious person.
Humanism is based on ethics that evolve with increased knowledge from scientific evidence. For instance the bible teaches us that animals have no soul, and for that reason Christians can conclude it is OK to mistreat animals, because they don’t actually feel anything. ( For instance Descartes)
Scientific evidence on the other hand, show this to be very clearly false. The emotions of many animals are almost exactly similar to our own emotions. And anyone who isn’t a deranged psychopath can see that with their own eyes.
The claim that Humanism isn’t better than the bible is outright deranged.
This is a doctrine of Christianity. The Churches that do what you wish are essentially vaguely spiritualist humanists, populated by old people who still think “christian” is a synonym for “good”
This is where humanism fails. Morality changes, as per the culture and time. In some ways, they can even just be flat out colonialist with trying to force their culture on others. There are examples of times when things which were morally horrific were accepted by the culture. People twisted scripture back then as those “progressivists” are doing now. The fruit comes from the same tree.
The difference is, Christians have a justification about wishing to “save” people whether you agree with it or not.
As for your theological issues, that’s just Christian doctrine, but you massively misrepresented it. Most religions believe in good and evil (such a thing is absent from atheism) and Christianity just makes a point about everyone being evil, and a divine forgiveness. It also takes away the stress and provides comfort to those scared that they’re not “good enough” for heaven