I remember loving this episode the first time I saw it. Because when I initially started watching, my ex had got me into it, and I remember continuously asking her why spock wasn't in command. He seemed clearly superior for the role to me, and i couldn't wrap my head around it. This episode solved that for me. It showed me that the crew wouldn't want to follow someone who's coldly logical when it's an emotional situation. The fact that spock acted mostly correctly, and they still wouldn't listen cemented that fact for me. Made it easier to enjoy the rest of the show. Also, on a side note, my memory may not be serving correct, but there was a huge problem with shedding weight to make it off the planet. I always wondered why they never thought to remove the chairs?