The importance of sport in modern world

Sport is an important part of today's society and plays a large role in many people's lives. Now more than ever, sport events dominate headlines and athletes have become national heroes. It goes without saying that sport should be constantly present in our life, but my question is “does sport have only positive aspects?”
From a social standpoint, sport plays a positive role in uniting people from different social backgrounds in support of their favorite team. This can aid people's understanding and tolerance of each other. However, just as sport unites people so it can divide them, as is often demonstrated by crowd violence at football matches.
As far as education is concerned, sport is an important part of every child's schooling, as it plays a big role in both their physical and mental development. It teaches children how to work as a part of a team and cooperate with others, while at the same time improving physical condition. The only drawback to this is that children who are less able to perform well in sport are likely to feel inadequate in comparison to their more gifted classmates, which may affect their self-confidence.
From an economic point of view, sport can be very profitable, as it attracts a lot of sponsorship and advertising. On the one hand this creates revenue for the sporting industry which allows for improvement and expansion. On the other hand large sums of money are often paid to event organizers to promote products such as cigarettes, which are harmful to one's health.
Moreover many people do sport because they want to keep fit and be healthy not only now but in future as well. However, as my grandmother said “between sport to disability”, it happens physical activity can bring us some troublesome, long-lasting injuries.
Don’t conclude from my speech that I’m against every kind of sport in our lives. I just wanted to show you that it has also some negative aspects. I hope you know how important sport is in my life. Now, knowing both advantages and disadvantages of it, think about the importance of sport in your life, because you’re the modern world.