Thanks for the perspectives, everyone. I guess it just felt very weird more than anything. It's likely that it was just a really strong case of regret/nostalgia, I just really didn't like the feeling, and in my tired state, just couldn't handle it like I normally could.
“I've noticed that about your people, Doctor. You find it easier to understand the death of one than the death of a million. You speak about the objective hardness of the Vulcan heart, yet how little room there seems to be in yours.” - Spock, The Immunity Syndrome
Leonard Nimoy: 1931 - 2015