Situations around us require a seriousness to deal with. Sure joking around can help you deal with stuff going on in life but you have to approach some things with sobriety and full attention. You might get lost in a situation that without having some serious attention could mean not so good consequences. When life or work demand your complete focus you have to treat that with the respect it deserves. There comes a time when seriousness is the only thing you can have to deal or cope in life.