There is lots of cases of athletes getting life long injury from playing sports, for example, NFL players getting cte from playing american football, and basketball players getting injury by broken bones while playing basketball

Yes, while sports can make people feel more healthier, but lets not forget that NFL recently report statistics that 50% of NFL players that have been passed early in their life have CTE, is getting a healthier body ok while theres a risk of getting CTE, that can affects your everyday movements and emotions? Another one, for basketball players, is getting a heathier body more ok than theres a chance that you could break your bones during a play, and it cost months or even years to recover.

Yes, without sports people can be less unity and less active, but lets not forget that you can also make enemies while playing sports. For example, draymond green and jordan poole case that happened two to three years ago, they almost have a brawl out because of disagreement in practice, till this day they have not spoke to each other after the incident happened. Another case is Kobe Bryant and Shaquille O'Neal case that happened twenty years ago, This case i will not further explain because it is too much happening in this case. Yes, sports can bring people to be around with others, but racism can also happened in sports, look at USA in the early fifties, White people does not want to be team with black people, and if they happened to play against black people, they will purposely try to injure those black people. If people want to more active in sports, i will recommend sports that does not have to compete with each other and have less injury risk such as jogging, or gym that does not need overweight lifting.