Southwest are the smallest seats I've experienced. I hate having to cross my arms and legs to avoid contact with the other passenger sitting next to me. I have sat next to all types. The worst was on my way to Chicago with Hispanic couple sitting next to me. At the end of the flight, They began bad mouthing me, making fun of me, and insulting me in Spanish (they were not aware that I am Hispanic myself and fluent in Spanish). I simply kept quiet and got off the flight. I did not divulge my hand. What I had just learned is that all of the deep dark evils of the world that we try to make pretend do not exist, actually do.