Why are so many people interested in sports?

People in general are competitive and get bored very easily, so an activity where they are able to compete against friends/family/enemies/strangers while distracting themselves as to not be bored is pretty much one of the most popular pass-times. People also love to watch sport because cheering for a team/player makes them fell part of something especially when they can get together with their friends and watch together and feel like part of the team.