Oh come on, people ares till allowed to "Win" at games! I played competitive sports when I was a boy and we loved winning! Heck, our team at work is frequently pitted against each other at work in games and we get carried away with the competitiveness! Modern society is NOT that pussified!
TBH, I was kind of getting tired of the Spock/McCoy racist banter with one another after 3 seasons of if. I'm glad the movies gave them some character development wherein they both got over it (more or less) and grew as characters.