Competition is a natural part of being a man. Modern sport is just a replacement for the more brutal, warlike competitions that men would engage in during ages past. These are natural things for men to be interested in, and they have many advantages such as teaching self-discipline and encouraging physical fitness.

The problem isn't playing sports or watching sports, it's escapism. If you're obsessed with sports as a way to avoid your problems and neglect other aspects of your life, then it's a problem. This is true for all forms of escapism, whether it be movies, television, food, videogames, etc. Escapism is okay in small doses but it is very easy to fall into a cycle of constant escapism which can make you end up filled with regret for a wasted life.