Obviously, there are many different views on this issue among many different circles.
For people that are in my circle- Playing sports is one of the best, if not THE best, outlets a teenager can have. Watching sports is perfectly fine in moderate amounts. You don’t want your kid glued to the television for every single game on. Going to games is a great way to bond with your kids. It can be a memorable experience.
For people in other circles- Do whatever you feel is right, and I will respect your opinion.