There are two elements to my objection I suppose. One is demonstrating that an objective morality exists, the second is determining what that objective morality is. So far given the questions you’ve asked it feels like your assertion might be along the lines of:
- Most people feel human life has value
Yes. I think that’s a well ordered inclination in humanity.
- There must be an explanation for this that transcends individual human beliefs
I would not say it in that way. I would say that the objective value of human life is self-evident, or revealed. It is revealed
outside the individual as well as interiorly. But the other-ness of human value does transcend individual human beliefs, yes.
The value of another human being, on a secular level, is revealed by the person standing next to me, and all others. We find meaning and value only in the context of others. This is anything but subjective. These others that mirror human value are
not me. This removes their value from the influence of my whims, or my opinions, or beliefs, or popular opinion (force).
I do not think this is a matter of finding a mere explanation.
- That explanation is therefore the source of objective morality
No, rather than an explanation, I would say objective morality resides in that “other-ness”.
I don’t want to get too far into religion here but…if nothing else Christianity is not about explanations, it is about relationship with the other. This opens up a huge conversation about the end of morality, which is love, or willing the good of another, not for subjective considerations. We don’t merely love ourselves, for ourselves, when we feel like it, when it’s popular,…turned inward in a vacuum. Love flows out to the other. Moral evaluation has this as it’s end point.