Playing a sport is NOT inherently healthy.
Playing sports MAY have some health benefits.
The paradigm has shifted so far within the fitness space that most people now equate their training to a competitive endeavor. There’s nothing wrong with setting goals for training and reaching for them. However, if you’re not training for a Power Lifting competition, there’s really not a need to be seeking end range PR’s on a regular basis. At some point you will have enough strength in specific movements and should probably focus on ways to broaden yourself.
If we think about having range in life, some of us have depth but no breadth. Others have breadth and no depth. We should strive for a mix of both within our body and mind. In the context of training we may see people who are extremely good at Deadlifting or Squatting, but ask them to play basketball and their body may lack the ability to move in the dynamic ways the sport requires.
So they have a depth of skill acquisition and movement capacity within the context of those two exercises, but have very little depth in the sport.
It’s like being really good at coding, but being terrible at communication. You can do a hell of a good job within a specific element of your company’s needs, but cannot fit in with your team well.
Many of us also often think that because we run or cycle on a regular basis, that we are healthy.