Humans are objects, just like any other physical entity (sentient or otherwise) that we share this universe with. The caveat is that humans also have moral value for the person inside, so we have limits to how we treat the human object. But acknowledging that a human object has physical attributes that we like to comment about (for being attractive or sexy or otherwise) does not diminish the care and respect that we have for the person inside. But likewise, denying the obvious fact that all humans are objects with aesthetic appeal is just dumb, and assigns way too much sense of self-importance when we chastise somebody for making comment on our physical form.